TY  - RPRT
TI  - Reference: the linguistic essential.
AU  - E S Savage-Rumbaugh
AU  - D M Rumbaugh
AU  - S T Smith
AU  - J Lawson
PY  - 1980
DO  - 10.1126/science.7434008
UR  - https://pubmed.ncbi.nlm.nih.gov/7434008/
ID  - 7434008
ER  -