Concealed Fertility and Extended Female Sexuality in a Non-Human Primate (Macaca assamensis) Fürtbauer, Ines ; Heistermann, Michael ; Schülke, Oliver ; Ostner, Julia Abstract Publication: PLoS ONE Pub Date: August 2011 DOI: 10.1371/journal.pone.0023105 Bibcode: 2011PLoSO...623105F