TY  - RPRT
TI  - Problem behavior and psychiatric impairment within a developmentally disabled population I: behavior frequency.
AU  - J W Jacobson
PY  - 1982
DO  - 10.1016/0270-3092(82)90002-9
UR  - https://pubmed.ncbi.nlm.nih.gov/7125639/
ID  - 7125639
ER  -