Authors: Kastelein, RA van der Elst, CA Tennant, HK Wiepkema, PR

Citation: Ra. Kastelein et al., Food consumption and growth of a female dusky dolphin (Lagenorhynchus obscurus), ZOO BIOL, 19(2), 2000, pp. 131-142

Authors: Kastelein, RA Schooneman, NM Vaughan, N Wiepkema, PR

Citation: Ra. Kastelein et al., Food consumption and growth of California sea lions (Zalophus californianus californianus), ZOO BIOL, 19(2), 2000, pp. 143-159

Authors: Menke, C Waiblinger, S Folsch, DW Wiepkema, PR

Citation: C. Menke et al., Social behaviour and injuries of horned cows in loose housing systems, ANIM WELFAR, 8(3), 1999, pp. 243-258

Authors: Verbeek, MEM De Goede, P Drent, PJ Wiepkema, PR

Citation: Mem. Verbeek et al., Individual behavioural characteristics and dominance in aviary groups of great tits, BEHAVIOUR, 136, 1999, pp. 23-48