Widler P, Mathys K, Brenneisen R, Kalix P, Fisch HU (May 1994). "Pharmacodynamics and pharmacokinetics of khat: a controlled study". Clinical Pharmacology and Therapeutics. 55 (5): 556–562. doi:10.1038/clpt.1994.69. PMID7910126. S2CID25788465.
Al-Motarreb A, Baker K, Broadley KJ (August 2002). "Khat: pharmacological and medical aspects and its social use in Yemen". Phytotherapy Research. 16 (5): 403–413. doi:10.1002/ptr.1106. PMID12203257. S2CID9749292.
Kalix P (1981). "Cathinone, an alkaloid from khat leaves with an amphetamine-like releasing effect". Psychopharmacology. 74 (3): 269–270. doi:10.1007/BF00427108. PMID6791236. S2CID20621923.
Widler P, Mathys K, Brenneisen R, Kalix P, Fisch HU (May 1994). "Pharmacodynamics and pharmacokinetics of khat: a controlled study". Clinical Pharmacology and Therapeutics. 55 (5): 556–562. doi:10.1038/clpt.1994.69. PMID7910126. S2CID25788465.
Al-Motarreb A, Baker K, Broadley KJ (August 2002). "Khat: pharmacological and medical aspects and its social use in Yemen". Phytotherapy Research. 16 (5): 403–413. doi:10.1002/ptr.1106. PMID12203257. S2CID9749292.
Kalix P (1981). "Cathinone, an alkaloid from khat leaves with an amphetamine-like releasing effect". Psychopharmacology. 74 (3): 269–270. doi:10.1007/BF00427108. PMID6791236. S2CID20621923.
Widler P, Mathys K, Brenneisen R, Kalix P, Fisch HU (May 1994). "Pharmacodynamics and pharmacokinetics of khat: a controlled study". Clinical Pharmacology and Therapeutics. 55 (5): 556–562. doi:10.1038/clpt.1994.69. PMID7910126. S2CID25788465.
Al-Motarreb A, Baker K, Broadley KJ (August 2002). "Khat: pharmacological and medical aspects and its social use in Yemen". Phytotherapy Research. 16 (5): 403–413. doi:10.1002/ptr.1106. PMID12203257. S2CID9749292.
Kalix P (1981). "Cathinone, an alkaloid from khat leaves with an amphetamine-like releasing effect". Psychopharmacology. 74 (3): 269–270. doi:10.1007/BF00427108. PMID6791236. S2CID20621923.