TY - RPRT TI - Cocaine self-administration under variable-dose schedules in squirrel monkeys. AU - Leigh V Panlilio AU - Eric B Thorndike AU - Charles W Schindler PY - 2006 DO - 10.1016/j.pbb.2006.05.002 UR - https://pubmed.ncbi.nlm.nih.gov/16814853/ ID - 16814853 ER -