TY  - RPRT
TI  - The communicative function hypothesis: an operant behavior perspective.
AU  - E Cipani
PY  - 1990
DO  - 10.1016/0005-7916(90)90024-f
UR  - https://pubmed.ncbi.nlm.nih.gov/2094737/
ID  - 2094737
ER  -