Wilson VAD , Weiss A, Humle T, Morimura N, Udono T, Idani G, Matsuzawa T, Hirata S, Inoue-Murayama M (2017) 
Chimpanzee Personality and the Arginine Vasopressin Receptor 1A Genotype

Behavior Genetics, Volume 47, Issue 2, pp 215-226

Hockings KJ. , Bryson-Morrison N, Carvalho S, Fujisawa M, Humle T, McGrew WC. , Nakamura M, Ohashi G, Yamanashi Y, Yamakoshi G, Matsuzawa T (2015) 
Tools to tipple: ethanol ingestion by wild chimpanzees using leaf-sponges

Royal Society Open Science, 2: 150150

Hong K, Weiss A, Morimura N, Udono T, Hayasaka I, Humle T, Murayama Y, Ito S, Inoue-Murayama M (2011) 
Polymorphism of the Tryptophan Hydroxylase 2 (TPH2) Gene Is Associated with Chimpanzee Neuroticism.

PLoS ONE, 6(7): e22144

Hockings KJ. , Humle T, Anderson JR. , Biro D, Sousa C, Ohashi G, Matsuzawa T (2007) 
Chimpanzees share forbidden fruit.

PLoS ONE, 2(9): e886