by Hessing, Manfred J.C, Hagelsø, A.Mette, Schouten, Willem G.P, Wiepkema, Piet R, Van Beek, Jan A.M
Published in Physiology & behavior (01.01.1994)

by Verbeek, Monica E.M., Drent, Piet J., Wiepkema, Piet R.
Published in Animal behaviour (01.11.1994)

by Verbeek, Monica E.M, Goede, Piet De, Drent, Piet, Wiepkema, Piet
Published in Behaviour (1999)

by Kastelein, Ronald A., Staal, Carolien, Wiepkema, Piet R.
Published in Aquatic mammals (01.01.2005)

by van Liere, Diederik W., Wiepkema, Piet R.
Published in Animal behaviour (1992)

by Van Liere, Diederik W., Wiepkema, Piet R.
Published in Animal behaviour (01.04.1992)

by Wiepkema, P R, Schouten, W G
Published in Psychotherapy and psychosomatics (01.01.1992)

by de Jonge, Francien H., Mekking, Peter, Abbott, Kristin, Wiepkema, Piet R.
Published in Behavioural processes (01.04.1994)

by Olivier, B, Olivier-Aardema, R, Wiepkema, P R
Published in Behavioural brain research (1983)

by Cronin, Gregory M., Wiepkema, Piet R., van Ree, Jan M.
Published in Neuropeptides (Edinburgh) (01.01.1985)

by Colpaert, F C, Wiepkema, P R
Published in Behavioral biology (01.01.1976)