TY  - JOUR 
T1  - Contingency management is effective in promoting abstinence and retention in treatment among crack cocaine users with a previous history of poor treatment response: a crossover trial
JO  - Psicologia: Reflexão e Crítica
A1  - Miguel, André de Queiroz Constantino
A1  - Madruga, Clarice Sandi
A1  - Simões, Viviane
A1  - Yamauchi, Rodolfo
A1  - Silva, Claudio Jerônimo da
A1  - McDonell, Michael
A1  - McPherson, Sterling
A1  - Roll, John
A1  - Laranjeira, Ronaldo Ramos
A1  - Mari, Jair de Jesus
SN  - 0102-7972
UL  - 10.1186/s41155-019-0127-2
VL  - 32 
Y1  - 2019
PB  - Brasil 
ER  -