Businelle MS, Kendzor DE, Reitzel LR, Vidrine JI, Castro Y, Mullen PD, Velasquez MM, Cofta-Woerpel L, Cinciripini PM, Greisinger AJ, Wetter DW. Pathways linking socioeconomic status and postpartum smoking relapse. Ann Behav Med. 2013 Apr; 45(2):180-91.