TY  - RPRT
TI  - Spaced and massed practice with a methodological consideration of avoidance conditioning.
AU  - J V MURPHY
AU  - R E MILLER
PY  - 1956
DO  - 10.1037/h0044969
UR  - https://pubmed.ncbi.nlm.nih.gov/13345974/
ID  - 13345974
ER  -