Heinrich Albert Oppermann
(5)
C. Leticia Oppermann Thies
(4)
Greta Gaard (EDT)/ Simon C. Estok (EDT)/ Serpil Oppermann (EDT)
(2)
Serpil Oppermann (EDT)/ Scott Slovic (FRW)/ Greta Gaard (AFT)/ Kyle Bladow (CON)/ William V. Lombardi (CON)
(2)
Serpil Oppermann (EDT)/ Serenella Iovino (EDT)
(2)
Andreas Kruck (EDT)/ Kai Oppermann (EDT)/ Alexander Spencer (EDT)
(1)
Kai Oppermann (EDT)/ Alexander Spencer (EDT)
(1)
Kai Oppermann/ Henrike Viehrig (EDT)
(1)
Klaus (Professor of International Relations Brummer Catholic University of Eichstatt-Ingolstadt),Kai (Professor for International Politics Oppermann Chemnitz University of Technology)
(1)
Klaus Brummer (EDT)/ Sebastian Harnisch (EDT)/ Kai Oppermann (EDT)/ Diana Panke (EDT)
(1)