1. Electrostatic powder spraying by means of electrokinetic charging;Kleber,1987
2. H. Schaad. Int.Cl.B 05 B5/02: DE 2 203 351, GB 1422 262, US 3 903 321, JP 55-51628
3. P. Hornung, W. Kleber, H. Bauch and D. Auerbach. Int. Cl. B 05 D 1/06: DE 2 347 491
4. Electrostatic powder gun design;Kleber;J. of Electrostatics,1993
5. The results with tribo-charging-equipment in correlation with new types of tribo guns;Kleber,1995