Report

Weaver, Tim and Hart, Jo and Fehler, Jeffrey and Metrebian, Nicky and D'Agostino, Tony and Benn, Piers (2007) Are contingency management principles being implemented in drug treatment in England? London: National Treatment Agency for Substance Misuse.

Book

Stimson, Gerry V and Metrebian, Nicky (2003) Prescribing heroin: what is the evidence? York: Joseph Rowntree Foundation .