Visual kin recognition in nonhuman primates: (Pan troglodytes and Macaca mulatta): inbreeding avoidance or male distinctiveness?
Parr LA, Heintz M, Lonsdorf E, Wroblewski E. Visual kin recognition in nonhuman primates: (Pan troglodytes and Macaca mulatta): inbreeding avoidance or male distinctiveness? J Comp Psychol. 2010 Nov; 124(4):343-50.