Copulation (zoology)

1 (1987): 51–60. Esta obra contiene una traducción derivada de «Copulation (zoology)» de Wikipedia en inglés, concretamente de esta versión del 18 de

Tennille R. Irvine, Ryan Crossing (2011). «Synchronous aggregated pseudo-copulation of the sea star Archaster angulatus Müller & Troschel, 1842 (Echinodermata:

salivates into them. He repeats this behavior before, between and after copulation, up to 100 times in one mating,” says Matjaž Gregorič of the Slovenian

Nancy Buschhaus (1998). «Ultimate causation of aggressive and forced copulation in birds: Female resistance, the CODE hypothesis, and social monogamy»

Zhou, S.; Zhang, S.; Zhang, L. (2009). «Fellatio by Fruit Bats Prolongs Copulation Time». PLOS One 4 (10): e7595. Bibcode:2009PLoSO...4.7595T. PMC 2762080