TY  - RPRT
TI  - Contagious yawning in chimpanzees.
AU  - James R Anderson
AU  - Masako Myowa-Yamakoshi
AU  - Tetsuro Matsuzawa
PY  - 2004
DO  - 10.1098/rsbl.2004.0224
UR  - https://pubmed.ncbi.nlm.nih.gov/15801606/
ID  - 15801606
ER  -