Are endotherms emancipated?: some considerations on the cost of reproduction
In: Oecologia, Jg. 69 H. 4, S. 631-633Are marine iguanas endanged on islands with introduced predators?
In: Noticias de Galápagos, Jg. 53, S. 13-15The behavioral ecology of maternal effort in fur seals and sea lions
In: Behaviour, Jg. 114 H. 1, S. 3-20Beobachtungen an Schlafplätzen der Kornweihe (Circus cyaneus) in der Oberrheinebene
In: Die Vogelwelt, Jg. 91, S. 184-191The breeding season of the flightless cormorant Nannopterum harrisi at Cabo Hammond, Fernandina
In: The Ibis, Jg. 125 H. 2, S. 221-223Der Brutraum beeinflußt Gelegegröße und Fortpflanzungserfolg beim Star (Sturnus vulgaris)
In: Journal für Ornithologie, Jg. 125 H. 1, S. 75-79Cephalopods in the diet of fur seals of the Galápagpos islands
In: Journal of zoology, Jg. 190, S. 211-215Characterization of proteins and fatty acid composition in galapagos fur seal milk. Occurrence of whey and casein protein polymorphisms
In: Comparative Biochemistry and Physiology, Part B: Biochemistry and Molecular Biology, Jg. 90 H. 2, S. 447-452The complete primary structure of the marine carnivora, galapagoes fur seal (Arctocephalus galapagoensis, Otariidae) hemoglobins
In: Journal of Protein Chemistry, Jg. 10 H. 3, S. 257-263Conservation problems on Galápagos: the showcase of evolution in danger
In: Die Naturwissenschaften, Jg. 79 H. 1, S. 1-6Distribution and abundance of sea lions (Otaria byronia) and fur seals (Arctocephalus australis) in Peru
In: Zeitschrift für Säugetierkunde, Jg. 46, S. 384-393