Journal Article
                        
                        Kebede, Derege, Atalay  Alem, Getnet  Mitike, Fikre  Enquselassie, Frehiwot  Berhane, Yigeremu  Abebe, Reta  Ayele, Wuleta  Lemma, Tamrat  Assefa, and Tewodros  Gebremichael.  
"Khat and Alcohol Use and Risky Sex Behaviour among In-school and Out-of-school Youth in Ethiopia." BMC Public Health 5, no. 109 (2005).