Conditioned Place Preference Calcagnetti 1996

Conditioned Place Preference Bienkowski 1997b

Conditioned Place Preference Spyraki 1988 – 2

Conditioned Place Preference Isaac 1989

Conditioned Place Preference Gong 1995

Conditioned Place Preference Hiroi 1991a

Conditioned Place Preference Bechara 1992

Conditioned Place Preference Nadar 1994

Conditioned Place Preference Olmstead 1994

Conditioned Place Preference Olmstead 1994

Conditioned Place Preference Tzschentke 1998

Conditioned Place Preference Hiroi 1991

Conditioned Place Preference Brown 1993

Conditioned Place Preference Everitt 1991

Conditioned Place Preference Everitt 1991

Conditioned Place Preference Olmstead 1997

Conditioned Place Preference Olmstead 1996

Conditioned Place Preference Olmstead 1996

Conditioned Place Preference Martin Iverson 1985

Conditioned Place Preference Nadar 1996

Conditioned Place Preference Hemby 1992

Conditioned Place Preference Carr 1983

Conditioned Place Preference Gong 1997

Conditioned Place Preference Pierce 1990

Conditioned Place Preference Shippenberg 1995

Conditioned Place Preference Rossi 1976

Conditioned Place Preference Scala 1985

Conditioned Place Preference Spyraki 1988

Conditioned Place Preference Jorenby 1990

Conditioned Place Preference Torrella 2004

Conditioned Place Preference Alexander 1994

Conditioned Place Preference Stapleton 1979

Conditioned Place Preference Stapleton 1979

Conditioned Place Preference Spyraki 1982