http://www.hiv.bg/alcoholdrughiv.htm
http://www.perspective.bg/Drugs/defin.htm
http://bg.wikipedia.org/wiki/%D0%9D%...82%D0%B2%D0%BE
http://liternet.bg/drugs_prevention_...roditeli/2.htm
http://bg.wikipedia.org/wiki/%D0%9A%...B8%D1%86%D0%B8