Contingency management: Schedule effects
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PII: S0165-1781(05)00388-4
doi:10.1016/j.psychres.2005.12.003
© 2005 Elsevier Ireland Ltd. All rights reserved.
PII: S0165-1781(05)00388-4
doi:10.1016/j.psychres.2005.12.003
© 2005 Elsevier Ireland Ltd. All rights reserved.