Catherine Collomp (EDT)/ Bruno Groppo (EDT)/ Abraham Plotkin
(2)
Fred Plotkin/ Fred Plotkin (NRT)
(2)
Mark R. (San Francisco Police Department (Retired) Hawthorne California USA),Sharon Plotkin,Bracey-Ann Douglas
(2)
Piroska Csuri,Mariano Ben Plotkin,Nicolas (National University of San Martin Viotti Argentina)
(2)
Bruce Hoffman/ Sofie Ruysschaert/ Mark J. Plotkin (CON)/ Frits Van Troon (CON)/ Joerie Zwerts (CON)
(1)