TY  - RPRT
TI  - Supervision: a container-contained approach.
AU  - V R Ungar
AU  - L B de Ahumada
PY  - 2001
DO  - 10.1516/0020757011600641
UR  - https://pubmed.ncbi.nlm.nih.gov/11234115/
ID  - 11234115
ER  -