Auteur : Michael Heistermann 1 Seasonal variation and social correlates of androgen excretion in male redfronted lemurs (Eulemur fulvus rufus) Titre original : Seasonal variation and social correlates of androgen excretion in male redfronted lemurs (Eulemur fulvus rufus) 2002 Auteurs : Julia Ostner Michael Heistermann Peter M. Kappeler