%0 Journal Article %T The motivation for beer in rats: effects of ritanserin, naloxone and SR 141716 %A Gallate, Jason E. %A McGregor, I. S. %J Psychopharmacology %V 142 %N 3 %P 302-308 %@ 0033-3158 %D 1999-03-01 %I Springer-Verlag %~ DeepDyve