by Ficken, Millicent Sigler, Popp, James W.
Published in Animal behaviour (1995)

by Popp, James W.
Published in Animal behaviour (01.08.1989)

by Popp, James W., Ficken, Millicent Sigler, Weise, Charles M.
Published in Animal behaviour (01.05.1990)

by Popp, James W.
Published in Behavioural processes (01.03.1988)

by Reinartz, J.A, Popp, J.W
Published in American journal of botany (01.03.1987)

by Popp, James W., Bunkfeldt-Popp, Linda
Published in Aggressive behavior (1986)