Nutt D, King LA, Blakemore C 2007 Aliment Pharmacol Ther 1995; 9: 81—83
Giannini AJ, Miller NS, Turner CE 1992 Heymann TD, Bhupulan A, Zuriekat NEK, Bomanji J, Drinkwater C, Giles P

Oesophageal and gastric carcinoma in the Republic of Yemen.

27
القات في اليمن
Gunaid AA, Sumairi AA, Shidrawi RG, Al-Hanaki A, Al-Haimi M, Al-Absi S, Al-Huribi MA, Qirbi AA, Al-Awlagi S, El-Guneid AM, Shousha S, Murray-Lyon IM
سرقة قات تتسبب في مقتل مواطن في إب
British Journal of Cancer 1995; 71: 409—410• Khat chewing and acute myocardial infarction
الرياض بوست
Adeoya-Osiguwa SA, Fraser LR 2007
"Les Cat's d'Arabie, d'Abyssinie et d'Afrique orientale" Ahmed MB, el-Qirbi AB 1993
Hassan NAGM, Gunaid AA, El Khally FMY, Murray-Lyon IM "Cathine, an amphetamine-related compound, acts on mammalian spermatozoa via beta1- and alpha2A-adrenergic receptors in a capacitation state-dependent manner"

"Development of a rational scale to assess the harm of drugs of potential misuse".

30
الرياض بوست
The subjective effects of chewing qat leaves in human volunteers
سرقة قات تتسبب في مقتل مواطن في إب
"Adverse effects of khat: a review"
اليمن، دولة
"Biochemical effects of Catha edulis, cathine and cathinone on adrenocortical functions"