TY  - RPRT
TI  - Barbary macaques categorize shrill barks into two call types.
AU  - J Fischer
PY  - 1998
DO  - 10.1006/anbe.1997.0663
UR  - https://pubmed.ncbi.nlm.nih.gov/9632468/
ID  - 9632468
ER  -