共 16 条
[5]
CHRISTIAN WP, IN PRESS
[9]
Flory R. K., 1971, LEARN MOTIV, V2, P215, DOI [10.1016/0023-9690(71)90022-1, DOI 10.1016/0023-9690(71)90022-1]
[10]
HAWKINS TD, 1972, SCHEDULE EFFECTS DRU