Media type: E-Article Title: Measuring the incentive value of escalating doses of heroin in heroin-dependent Fischer rats during acute spontaneous withdrawal Contributor: Seip, Katharine M.; Reed, Brian; Ho, Ann; Kreek, Mary Jeanne Published: Springer Science and Business Media LLC, 2012 Published in: Psychopharmacology, 219 (2012) 1, Seite 59-72 Language: English DOI: 10.1007/s00213-011-2380-7 ISSN: 0033-3158; 1432-2072 Origination: Footnote: