1. A medical evaluation of the use of qat in North Yemen;Kennedy;Social Science & Medicine,1983
2. Khat (Qat): Assessment of risk to the individual and communities in the UK, Advisory council on the Misuse of Drugs;Advisory Council on the Misuse of Drugs,2005
3. Khat: A review of its potential harms to the individual and communities in the UK;Advisory Council on the Misuse of Drugs,2013
4. Khat: A widely used drug of abuse in the Horn of Africa and the Arabian Peninsula: Review of literature;Al-Juhaishi;Qatar Medical Journal,2012
5. Khat (Catha edulis) and its oral health effects: An updated review;Al-Maweri;Journal of Investigative and Clinical Dentistry,2017