Moreira, C. M.; dos Santos, L. P.; Sousa, M. B. C.; Izar, P. Variation of Glucocorticoid Metabolite Levels Is Associated With Survival Demands in Immature and Reproductive Demands in Adult Wild Black Capuchins (Sapajus Nigritus). Int. j. psychol. res. 2016, 9, 20-29.