Sigmon, Stacey C <br/><br/>
Cocaine abstinence during methadone maintenance: effects of repeated brief exposure to voucher-based reinforcement.  [electronic resource] 

 -  Experimental and clinical psychopharmacology  Nov 2004 
 - 269-75 p.  digital 
<br/><br/> Publication Type: Clinical Trial; Journal Article; Randomized Controlled Trial; Research Support, U.S. Gov't, P.H.S. 
<br/><br/><label>ISSN: </label>1064-1297 
<br/><br/><label>Standard No.: </label>10.1037/1064-1297.12.4.269  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Adult<br/>Cocaine-Related Disorders--rehabilitation<br/>Female<br/>Humans<br/>Male<br/>Methadone--therapeutic use<br/>Motivation<br/>Reinforcement, Psychology<br/>Substance Abuse Detection