Share your sweets: Chimpanzee (Pan troglodytes) and bonobo (Pan paniscus) willingness to share highly attractive, monopolizable food sources
Journal of Comparative Psychology (2015) - Comment
pubmed: 26075515  doi: 10.1037/a0039351  issn: 1939-2087  issn: 0735-7036 

Jill T. Byrnit, Henrik Høgh-Olesen, Guido Makransky