First observations on colony structure, behavior and vocal repertoire of the South American fur seal (Arctocephalus australis, Zimmermann 1783) in Peru
In: Zeitschrift für Säugetierkunde, Jg. 46, S. 310-3221981
Foraging strategies of the marine iguana, Amblyrhynchus cristatus
In: Behavioral Ecology and Sociobiology, Jg. 18 H. 4, S. 259-2661986