Authors: Kopstein, AN Crum, RM Celentano, DD Martin, SS

Citation: An. Kopstein et al., Sensation seeking needs among 8th and 11th graders: characteristics associated with cigarette and marijuana use, DRUG AL DEP, 62(3), 2001, pp. 195-203

Authors: Bahrke, MS Yesalis, CE Kopstein, AN Stephens, JA

Citation: Ms. Bahrke et al., Risk factors associated with anabolic-androgenic steroid use among adolescents, SPORT MED, 29(6), 2000, pp. 397-405