TY  - RPRT
TI  - Group training with active participation: some methodological limitations.
AU  - P C WOLFF
AU  - D D BURNSTEIN
AU  - D F HAGGARD
AU  - J A VAN LOO
PY  - 1963
DO  - 10.2466/pms.1963.16.1.179
UR  - https://pubmed.ncbi.nlm.nih.gov/14001609/
ID  - 14001609
ER  -