TY  - RPRT
TI  - Group process: the black box of studies on problem-based learning.
AU  - T Hak
AU  - P Maguire
PY  - 2000
DO  - 10.1097/00001888-200007000-00027
UR  - https://pubmed.ncbi.nlm.nih.gov/10926033/
ID  - 10926033
ER  -