TY  - RPRT
TI  - Studies in spaced and massed learning; paired-associate and serial learning.
AU  - J C TSAO
PY  - 1950
DO  - 10.1080/17470215008416570
UR  - https://pubmed.ncbi.nlm.nih.gov/15410047/
ID  - 15410047
ER  -