1. Indicación terapéutica en drogodependencias;Megías;Com y Drog,1987
2. Characteristics of drug abusers admitted to a psychiatric hospital;Heikimian;J Amer Med Assoc,1968
3. Personality test scores as predictors of alcoholism almost a decade later;Schuckit;Am J Psychiatry,1995
4. Adolescent drug use and psychological health: A ongitudinal inquiry;Schedler;Am Psychol,1990