%0 Journal Article %T Interaction between discrimination of drug states and external stimuli %A Duncan, Perry %A Phillips, Jerry %A Reints, Jane %A Schechter, Martin %J Psychopharmacology %V 61 %N 1 %P 105-106 %@ 0033-3158 %D 1979-01-01 %I Springer-Verlag %~ DeepDyve