Algerian mother holds a photograph of her disappeared son during a gathering outside a human rights group office in Algiers September 28, 2005. For a decade, dozens of mothers have held sit-ins once a week outside the office demanding the return of their loved ones or information about their fates. [Algeria's national referendum, which will be held on September 29 aims at ending more than a decade of conflict which will help Islamists reach their goal of forming a purist Islamic republic,an influential former leading militant said on Monday.]