Weller, A; Blass, E M (1990) Cholecystokinin conditioning in rats: ontogenetic determinants. Behav Neurosci 104:199-206 |
Blass, E M; Fillion, T J; Weller, A et al. (1990) Separation of opioid from nonopioid mediation of affect in neonatal rats: nonopioid mechanisms mediate maternal contact influences. Behav Neurosci 104:625-36 |