RT Article T1 Learned helplessness and cocaine dependence: An investigation JF Journal of addictive diseases VO 15 IS 2 SP 13 OP 24 A2 Sterling, R. C. A2 Gottheil, E. A2 Weinstein, S. P. A2 Lundy, A. A2 Serota, R. D. LA English YR 1996 UL https://krimdok.uni-tuebingen.de/Record/1639332022 K1 Kokainabhängigkeit