1. K. Adamiak and J. Mao, “Simulation of particle trajectories in tribo-powder coating,” Conference Record IEEE/Industry Applications Society 30 Annual Meeting, Orlando, vol. 2, pp. 1273-1279, 1995. 
2. G. Allan and R.L. Henderson, “Method for separating electrically conductive mineral components from electrically non-conductive mineral components of an ore,” US Patent 6168029, 2001. 
3. F. Aman, R. Morar, R. Köhnlechner, A. Samuila, and L. Dascalescu, “High-voltage electrode position: a key factor of electrostatic sepa-ration efficiency,” IEEE Transactions on Industry Applications, 40(3), pp. 905-910, 2004. 
4. A.G. Bailey, “Charging of solids and powders,” Journal of Electrostatics, vol.30, pp.167-180, 1993. 
5. A. Bendaoud, L. Dascalescu, M. Blajan, A. Samuila, A. Stochita, and P. Notingher, “Corona charging of granular layers of insulating particles at the surface of a grounded electrode,” J. Electrostat., vol. 63 (6-10), pp. 643-647, 2005. 
6. J. Bohm, Electrostatic Precipitators, Amsterdam, Elsevier, 1982. 
7. L. Brands, P.M. Beier, and I. Stahl, “Electrostatic Separation,” in Ullmann’s Encyclopaedia of Industrial Chemistry, Wiley – VCH Verlag, Weinheim, 2001. 
8. A.W. Bright, R.P. Corbett, and J.F. Hughes, Electrostatics, Oxford University Press, 1978. 
9. A. Caron and L. Dascalescu, “Numerical modeling of combined corona-electrostatic fields,” J. Electrostat., 61(1), pp. 43-55, 2004. 
10. *** Carpco, Inc, “The Solution to Separation,” Bulletin No. 904, Carpco, Jacksonville, FL, 1990. 
11. *** Carpco Inc, “Rejection of PVC from PET flake using the Carpco V-stat separator,” Bulletin No. 97713, Carpco, Jacksonville, FL, 1997. 
12. G.P.S. Castel, “Contact charging between insulators,” J. Electrostat., vol. 40 & 41, pp. 13-20, 1997. 
13. J.S. Chang, A.J. Kelly, and J.M. Crowley (Eds), Handbook of Electrostatic Processes, New York, Dekker, 1995. 
14. J.S. Chang, "Electrostatic charging of particles," in Handbook of Electrostatic Processes, J. S. Chang, A. J. Kelly, and J. M. Crowley(Eds.), Dekker, New York, pp. 39-49, 1995. 
15. J.A. Cross, Electrostatics. Principles, Problems and Applications, Adam Hilger, Bristol, 1987. 
16. J.M. Crowley, Fundamentals of Applied Electrostatics, Wiley, New York, 1986. 
17. A.D. Dance, T. Kojovic, and R.D. Morrison, “Development of electrostatic separation models for the mineral sands industry,” Proc. Extractive Metallurgy, Perth, pp. 13-18, 1991. 
18. L. Dascalescu, A. Iuga, R. Morar, V. Neamtu, I. Suarasan, A. Samuila, and D. Rafiroiu, “Corona and electostatic electrodes for high-tension separators”, J. Electrostat., 29(3), pp. 211-215, 1993. 
19. L. Dascalescu, R. Morar, A. Iuga, A. Samuila, V. Neamtu, and I. Suarasan, "Charging of particulates in the corona field of roll-type electroseparators," Journal of Physics D: Applied Physics, 27(6), pp. 1242-1251, 1994. 
20. L. Dascalescu, A. Samuila, A. Iuga, R. Morar, and I. Csorvasy, “Influence of material superficial moisture on insulation-metal electroseparation,” IEEE Trans. Ind. Appl., 30(4), pp. 844–852, 1994. 
21. L. Dascalescu, A. Mizuno, R. Tobazéon, A. Iuga, R. Morar, M. Mihailescu, and A. Samuila, “Charges and forces on conductive particles in roll-type corona-electrostatic separators,” IEEE Trans. Ind. Appl., 31(5), pp. 947-956, 1995. 
22. L. Dascalescu, R. Morar, A. Iuga, A. Samuila, and V. Neamtu, “Electrostatic separation of insulating and conductive particles from granular mixes,” Particulate Science and Technology, 16(1), pp. 25-42, 1998. 
23. L. Dascalescu, D. Rafiroiu, A. Samuila, and R. Tobazéon, "Charging of insulating spheres on the surface of an electrode affected by monopolar ions," IEEE Trans. Ind. Appl., 34(1), pp. 35-42, 1998. 
24. L. Dascalescu, A. Samuila, D. Rafiroiu, A. Iuga, and R. Morar, “Multiple-needle corona electrodes for electrostatic processes application,” IEEE Trans. Ind. Appl., 35(3), pp. 543-548, 1999. 
25. L. Dascalescu, “Electrostatic separation of plastics from industrial wastes,” J. Electrostat. Japan, vol. 25, pp. 282-288, 2001. 
26. L. Dascalescu, A. Samuila, A. Mihalcioiu, S. Bente, and A. Tilmatine, “Robust control of electrostatic separation processes,” Proceedings of the ESA-IEEE Joint Meeting on Electrostatics, University of Arkansas, Little Rock, Laplacian Press, pp. 131-140, 2003. 
27. L. Dascalescu, A. Urs, L.M. Dumitran, and A. Samuila, “Charging of one or several cylindrical particles in monoionized electric fields,” IEEE Trans. Ind. Appl., 39(2), pp. 362-367, 2003. 
28. L. Dascalescu, A. Mihalcioiu, A.Tilmatine, K. Medles, and A. Samuila, “Effect of ambient humidity on the outcome of electrostatic separation processes,” Conf. Rec. IEEE/IAS Ann. Meet., Seattle, vol. 3, pp. 1947-1953, 2004. 
29. L. Dascalescu, A. Tilmatine, F. Aman, and M. Mihailescu, “Optimisation of electrostatic separation processes using response surface modeling,” IEEE Trans. Ind. Appl., 40(1), pp. 53-59, 2004. 
30. L. Dascalescu, A. Mihalcioiu, A. Tilmatine, M. Mihailescu, A. Iuga, A. Samuila, “Electrostatic separation processes,” IEEE Industry Applications Magazine, 10(6), pp. 19-25, 2004. 
31. L. Dascalescu, A. Mihalcioiu, A. Stochita, and P. Notingher, “Charge-decay characteristics of granular materials forming mono-layers at the surface of grounded electrodes,” Conf. Rec. IEEE/IAS 40 Ann. Meet., Hong Kong, vol. 2, pp.1414-1417, 2005. 
32. H. Debruyne and O. Lesaint, “About the significance of PD measurements in liquids,” IEEE Transsactions on Dielectrics and Electrical Insulation, 10(3), pp. 385-392, 2003. 
33. J.R. Mc Donald, M. H. Anderson, and R. B. Mosley, "Charge measurement on individual particles existing in laboratory precipitators with positive and negative corona at various temperatures," J. Appl. Phys., vol. 51, pp. 3632-3643, 1980. 
34. L. Dumitran, L. Dascalescu, P Atten, and P.V. Notingher, “Computational and experimental study of ionic space charge generated by combined corona-electrostatic electrode systems,” Conf. Rec. IEEE/IAS 39 Ann. Meet., Seattle, vol. 3, pp. 1577-1583, 2004. 
35. L. Dumitran, O. Blajan, P. Notingher, A. Samuila, L. Dascalescu, “Particle charging in combined corona-electrostatic fields,” Conf. Rec. IEEE/IAS 40 Ann. Meet., Hong Kong, vol. 2, pp. 1429-1434, 2005. 
36. L. Eriksson, E. Johansson, N. Kettaneh-Wold, C. Wikström, and S. Wold, Design of Experiments. Principles and Applications, Learnways AB, Stockholm, 2000. 
37. N.L. Frigon, and D. Mathews, Practical Guide to Experimental Design, New York, Wiley, 1996. 
38. J.B. Gajewski, “Measuring probes, head, and system for the non-contact, electrostatic measurements of the two-phase flow parameters in pneumatic transport of solids,” J. Electrostat., 32(3), pp. 297-303, 1994. 
39. J.B. Gajewski, “Monitoring electrostatic flow noise for mass flow and mean velocity measurement in pneumatic transport,” J. Electrostat., 37(4), pp. 261-276, 1996. 
40. J.B. Gajewski, “Electric charge measurement in pneumatic installations,“ J. Electrostat., vol. 40 & 41, pp. 231-236, 1997. 
41. J.B. Gajewski, “Dynamic effect of charged particles on the measuring probe potential,” J. Electrostat., vol. 40 & 41, pp. 437-442, 1997. 
42. J.B. Gajewski, “Electrostatic flow probe and measuring system calibration for solids mass flow rate measurement,” J. Electrostat., 45(4), pp. 255-264, 1999. 
43. E.L. Grant, Statistical Quality Control, New York, McGraw-Hill, 1988. 
44. N. Grass, W. Hartmann, and M. Klöckner, “Application of different types of high-voltage supplies on industrial electrostatic precipitators,” IEEE Trans. Ind. Appl., 40(6), pp. 1513-1520, 2004. 
45. K. Haga, "Applications of the electrostatic separation technique," in Handbook of Electrostatic Processes, J. S. Chang, A. J. Kelly, and J. M. Crowley, Eds., Dekker, New York, pp. 365-386, 1995. 
46. *** Hamos GmbH, “Triboelectric Separators,” Bulletin KWS_D_1 10/98, Hamos GmbH, Penzberg, Germany, 1998. 
47. C.R. Hicks, and K.V. Turner Jr., Fundamental Concepts in the Design of Experiments, Oxford, Oxford University Press, 1999. 
48. Y. Higashiyama and K. Asano, "Recent progress in electrostatic separation technology," Particulate Science and Technology, 16(1), pp. 77-90, 1998. 
49. M.M. Horenstein, “Measuring surface charge with a noncontacting voltmeter,” Conf. Rec. IEEE/IAS Ann. Meet., vol. 3, pp.1811-1816, 1993. 
50. A.F. Howe and J. A. Houlgreave, "An experimental investigation of the charging of different sized particles in a precipitator," Proc. Int. Conf. on Electrostatic Precipitation, Padova, pp. 329-336, 1987. 
51. J.F. Hughes, Electrostatic Powder Coating, Research Studies Press, New York, 1985. 
52. J.F. Hughes, Electrostatic Particle Charging - Industrial and Health Care Applications, New York, John Wiley & Sons Inc., 1997. 
53. I.I. Inculet, N. H. Malik, and J. A. Young, "Corona charging of immobilized spherical particles," in Electrostatics 1983, Oxford, pp. 99-104, 1983. 
54. I.I. Inculet, Electrostatic Mineral Separation, New York, Wiley, 1986. 
55. I.I. Inculet, G.S.P. Castle, and J.D. Brown, “Electrostatic separation of plastics for recycling,” Particulate Science and Technology, 16(1), pp. 91-100, 1998. 
56. F. Isahaya, "Specific surface charge density of non-spherical particle and charge decrease by partial self-discharge in high electric field intensity," Proc. Int. Conf. Modern Electrostat Beijing, pp. 101-104, 1988. 
57. A. Iuga, L. Dascalescu, R. Morar, I. Csorvassy, and V. Neamtu, “Corona-electrostatic separators for recovery of waste non-ferrous metals,” J. Electrostat., vol. 23, pp. 235-243, 1989. 
58. A. Iuga, V. Neamtu, I. Suarasan, R. Morar, and L. Dascalescu, “Optimal high-voltage energization of corona-electrostatic separators,” IEEE Trans. Ind. Appl., 34(2), pp. 286-293, 1998. 
59. A. Iuga, R. Morar, A. Samuila, and L. Dascalescu, “Electrostatic separation of metals and plastics from granular industrial wastes,” IEE Proceedings: Science, Measurement and Technology, 148(2), pp. 47-54, 2001. 
60. A. Iuga, I. Cuglesan, A. Samuila, M. Blajan, D. Vadan, and L. Dascalescu, “Electrostatic separation of muscovite mica from feldspathic pegmatite” IEEE Trans. Ind. Appl., 40(2), pp. 422-429, 2004. 
61. A. Iuga, A. Samuila, M. Blajan, R. Beleca, R. Morar, and L. Dascalescu, “Characterization of corona electrodes for electrostatic separation applications at small and large discharge gaps,” Conf. Rec. IEEE/IAS Ann. Meet., Seattle, vol. 3, pp. 1967-1973, 2004. 
62. A. Iuga, L. Calin, V. Neamtu, A. Mihalcioiu, and L. Dascalescu, “Tribocharging of plastics granulates in a fluidized bed device,” J. Electrostat., 63(6-10), pp. 937-942, 2005. 
63. N.L. Johnson and S. Kotz, Process Capability Indices, London, Chapman & Hall, 1993. 
64. S. Kanazawa, T. Ohkubo, Y. Nomoto, and T. Adachi, “Electrification of a pipe wall during powder transport,” J. Electrostat., 35(1), pp. 47-54, 1995. 
65. *** Keithley, Low Level Measurments,” 5th Edition, Keithley Instruments Inc., 1998. 
66. *** Keithley, Model 6514 System Electrometer Instruction Manual, Keithley Instruments Inc., 1998. 67. *** Keithley, Data Aquisiton and Control Handbook - A Guide to Hardware and Software for Computer-Based Measurment and Control, 1st Edition, Keithley Instruments Inc., 2000. 
68. W. Kleber, “Elektrostatische Oberflächenbeschichtung”, MO Metalloberfläche Beschichten von Metall und Kundstoff,“ 54, pp. 48-51, 2000. 
69. F. S. Knoll, J. E. Lawver, J. B. Taylor, “Electrostatic Separation,” in Ullmann's Encyclopedia of Industrial Chemistry, 5-th Ed., VCH, Weinheim, vol B2, 20-1- 20-11, 1988. 
70. R. Köhnlechner, “Triboelectric charging and electrostatic separation of diverse, non-conductive mixed waste, especially plastic, employs enclosed vibro-conveyor followed by in-flight separation influenced by non-linear electrostatic field,” Patent DE 19901743, 2000. 
71. B.A. Kwetkus, “Contact electrification of coal and minerals,” J. Electrostat, vol. 32, no. 3, pp. 271-276, 1994. 
72. B.A. Kwetkus, “Particle triboelectrification and its use in the electrostatic separation process,” Particulate Science and Technology, 16(1), pp. 55-68, 1998. 
73. J.E. Lawver and W.P. Dyrenforth, "Electrostatic separation," in A.D. Moore (Ed.), Electrostatics and Its Applications, New York, Wiley, pp. 221-249, 1973. 
74. T. Link, Y. Soong, and M. R. Schoffstall, “Device and method for separating minerals, carbon and cement additives from fly ash,” US Patent 6681938, 2004. 
75. S. Masuda and M. Washizu, "Ionic charging of a very high resistivity spherical particle," J. Electrostatics, 6(1), pp. 57-67, 1979. 
76. S. Masuda and S. Hosokawa, “Electrostatic precipitation,” in Handbook of Electrostatic Processes, J.S. Chang, A.J. Kelly and J.M. Crowley (Eds), New York, Marcel Dekker, pp. 441-480, 1995. 
77. M.K. Mazumder, D.L. Wankum, R.A. Sims, J.R. Mountain, H. Chen, P. Pettit, and T. Chaser, “Influence of powder properties on the performance of electrostatic coating process,” J. Electrostat., vol. 40&41, pp. 369-374, 1997. 
78. M.K. Mazumder, A.S. Biris, R. Sharma, D. Kumar, S. Trigwell, and R.A. Sims, “Measurement of surface topography, packing density, and surface charge distribution of an electrostatically deposited powder layer by image analysis of fluorescent latex spheres,” Particulate Science and Technology, 19(3), pp. 239-256, 2001. 
79. K. Medles, A. Tilmatine, F. Miloua, A. Bednaoud, M. Younes, M. Rahli, and L. Dascalescu, “Set point identification and robustness testing of electrostatic separation processes”, Conf. Rec. IEEE/IAS Ann. Meet., Seattle, vol. 3, pp. 1959-1966, 2004. 
80. K. Medles, A. Tilmatine, A. Bendaoud, K. Senouci, S. Das, A. Mihalcioiu, L. Dascalescu, “Capability evaluation and statistic control of electrostatic separation processes,” Conf. Rec. IEEE/IAS 40 Ann. Meet., Hong Kong, vol. 4, pp. 2590-2596, 2005. 
81. B.D. Moyle and J.F. Hughes, "Corona charging of insulating particles," in Institute of Physics Conference Series, vol. 66, Oxford, pp. 155-160, 1983. 
82. A. Mihalcioiu, V. Neamtu, A. Stochita, and L. Dascalescu “High-voltage monitoring in electrostatic separators”, Conf. Rec. IEEE/IAS Ann. Meet., Seattle, vol. 3, pp. 1974-1980, 2004. 
83. A. Mihalcioiu, L. Dascalescu, S. Das, K. Medles, and R. Munteanu, “Virtual instrument for statistic control of powder tribo-charging processes,” J. Electrostat., 63(6-10), pp. 565-570, 2005. 
84. M. Mihailescu, A. Samuila, A. Urs, R. Morar, A. Iuga, and L. Dascalescu, “Computer-assisted experimental design for optimization of electrostatic separation processes,” IEEE Trans. Ind. Appl., 38(5), pp. 1174-1181, 2002. 
85. A. Mizuno, "Review of particle charging research", in Proc. Int. Conf. on Electrostatic Precipitation, Monterey, pp. 304-325, 1981. 
86. A. Mizuno and M. Fukuma, "Decrease in charge of sharp-edged ellipsoidal particles by self-discharge," IEEE Trans. Ind. Appl., vol. 21-IA(1), pp. 41-46, 1985. 
87. D.C. Montgomery, Introduction to Statistical Quality Control, New York, Wiley, 1996. 
88. A.D. Moore, Electrostatics, Second edition, Laplacian Press, Morgan Hill, CA, 1997. 
89. R. Morar, A. Iuga, L. Dascalescu, and A. Samuila, “Factors which influence the insulation-metal electroseparation,” J. Electrostat., vol. 30, pp. 403-412, 1993. 
90. T. Mori, The New Experimental Design. Taguchi’s Approach to Quality Engineering, Dearborn, Michigan: American Supplier Institute, 1993. 
91. R. Munteanu, I.G. Tarnovan, N.D. Dragomir, and G. Todoran, “Considerations about virtual measurement with resistive transducers,” Conference Record - IEEE Instrumentation and Measurement Technology Conference, vol. 2, pp. 849-854, 2001. 
92. *** National Instruments, LabVIEW. Measurements Manual, National Instruments, Austin, Tx, 2000. 
93. *** National Instruments, Virtual Instrumentation, URL:, 2005. 
94. M.A. Noras, “Non-contact surface charge/voltage measurements. Capacitive probe – principle of operation,” TREK Application Note No. 3001, 2002 ( 
95. M.A. Noras, “Non-contact surface charge/voltage measurements. Fieldmeter and voltmeter methods,” TREK Application Note No. 3002, 2002 ( 
96. M.A. Noras, “Charge Detection Methods for Dielectrics – Overview,” TREK Application Note No. 3005, 2003 ( 
97. *** North Star Research Corporation, Voltage Probe Manual and Data, 2000. 
98. M. Pauthenier and M. Moreau-Hanot, "La charge de particules sphériques dans un champ ionisé," J. Phys. Radium, vol. 3, pp. 590-613, 1932. 
99. G.S. Peace, Taguchi Methods, New York, Addison Wesley, 1992. 
100. M. Pillet, Appliquer la Maîtrise Statistique des Procédés (MSP/SPC), Paris, Editions d’Organisation, 1997. 
101. O.C. Ralston, Electrostatic Separation of Mixed Granular Solids,” Amsterdam, Elsevier, 1961. 
102. M. Robinson, "Electrostatic precipitation," in Electrostatics and Its Applications, A. D. Moore (Ed.), New York, Wiley, pp. 180-220, 1973. 
103. H. Romat, P. Berhami, G. Touchard, P.O. Grimaud, M. Boudalaa, J. Borzeix, and L. Zougar, “Generation de charges dans les ecoulements triphasiques,” J. Electrostat., 32(3), pp. 261-270, 1994. 
104. P.J. Ross, Taguchi Techniques for Quality Engineering, New York, McGraw Hill, 1988. 
105. R.K. Roy, A Primer on the Taguchi Method, Society of Manufacturing Engineers, 1990. 
106. R.K. Roy, Design of the Experiments Using Taguchi Approach. 16 Steps to Product and Process Improvement, New York, Wiley, 2001. 
107. L. Salasoo, J. K. Nelson, R. J. Schwabe, and W. L. Snaddon, "Estimation of particulate charging and migration for pulsed precipitator applications,” J. Electrostat., 19(1), pp. 1-19, 1987. 
108. *** Sames Technologies, Tribojet JR 106 - Manual Tribo-gun, Sames Technologies, Meylan, France, 2004. 
109. A. Samuila, A. Iuga, R. Morar, R. Tobazéon, and L. Dascalescu, “Factors which affect the corona charging of insulating spheres on plate and roll electrodes,” J. Electrostat., vol. 40&41, pp. 377-382, 1997. 
110. A. Samuila and L. Dascalescu, “Unipolar charging of cylindrical insulating particles near electrode surfaces,” IEEE Trans. Ind. Appl., 34(1), pp. 51-56, 1998. 
111. A. Samuila, A. Mihalcioiu, A. Urs, and L. Dascalescu, “Unipolar charging and contact discharging of insulating particles on the surface of a grounded electrode,” Institute of Physics Conference Series, vol.178, pp. 65-69, 2004. 
112. R. Sharma, S. Trigwell, A.S. Biris, R.A. Sims, and M.K. Mazumder, “Effect of ambient relative humidity and surface modification on the charge decay properties of polymer powders in powder coating,” IEEE Trans. Ind. Appl., 39(1), pp. 87-95. 2003. 
113. M. Sugihara, L. Dascalescu, G. Touchard, H. Romat, P.O. Grimaud, and S. Watanabe, “Charge generated by impact of balls on a metallic wall,” J. Electrostat., 35(1), pp. 125-132, 1995. 
114. I. Szecely, W. Szabo, and R. Munteanu, Sisteme pentru achizitie si prelucrarea datelor, Cluj-Napoca, Ed. Mediamira, 1997. 
115. G. Taguchi, System of Experimental Designs, New York, Kraus International Publications, 1987. 
116. G. Taguchi, E.A. Elsayed, and T.C. Hsiang, Quality Engineering in Production Systems, New York, McGraw-Hill, 1989. 
117. G. Taguchi and Y. Yokoyama, Taguchi Methods: Design of Experiments, Dearborn, Michigan: American Supplier Institute, 1993. 
118. I.G. Tarnovan, E. Simion, R. Munteanu, and N.D. Dragomir, “Computer-aided diagnosis of magnetoelectric measurement systems,” Measurement: Journal of the International Measurement Confederation, vol.16, no. 1, pp. 7-10, 1995. 
119. K.B. Tennal, D. Lindquist, M.K. Mazumder, R. Rajan, and W. Guo, “Efficiency of electrostatic separation of minerals from coal as a function of size and charge distributions of coal particles,” Conf. Rec. IEEE/IAS Ann. Meet., Pheonix, AZ, vol. 4, pp. 2137–2142, 1999. 
120. G. Touchard, M. Benmadda, P. Humeau, and J. Borzeix, “Static electrification by dusty gas flowing through polyethylene pipes,” Int. Phys. Conf. Series, vol. 85, pp. 97-102, 1987. 
121. *** Umetrics AB, MODDE 5.0. User Guide and Tutorial, Umetrics, Umea, Sweden, 1999. 
122. A. Urs, A. Samuila, A. Mihalcioiu, and L. Dascalescu, “Charging and discharging of insulating particles on the surface of a grounded electrode,” IEEE Trans. Ind. Appl. , 40(2), pp. 437-441, 2004. 
123. S. Vlad, A. Iuga, and L. Dascalescu, “Numerical computation of conducting particle trajectories in plate-type electrostatic separators,” IEEE Trans. Ind. Appl., 39(1), pp. 543-548, 2003. 
124. Y. Wu and W.H. Moore, Quality Engineering Product and Process Optimization, Dearborn, Michigan, American Supplier Institute, 1986. 
125. Y. Wu, Orthogonal Arrays and Linear Graphs, Dearborn, Michigan, American Supplier Institute, 1986.