Effects of drug-induced differences in reinforcement frequency on discriminative stimulus properties of fentanyl

1984 ◽  
Vol 83 (3) ◽  
pp. 257-261 ◽  
Author(s):  
Jean De Vry ◽  
Wouter Koek ◽  
Jef L. Slangen
1999 ◽  
Vol 62 (4) ◽  
pp. 607-612 ◽  
Author(s):  
Eliza Koros ◽  
Wojciech Kostowski ◽  
Przemyslaw Bienkowski

1985 ◽  
Vol 85 (1) ◽  
pp. 23-30 ◽  
Author(s):  
René de la Garza ◽  
C. E. Johanson

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