TY  - RPRT
TI  - Role allocation and differentiation through time in medium-sized groups.
AU  - G Marwell
PY  - 1968
DO  - 10.1080/00224545.1968.9924849
UR  - https://pubmed.ncbi.nlm.nih.gov/5642220/
ID  - 5642220
ER  -