G. Bondolfi, F. Morel, S. Crettol, F. Rachid, P. Baumann, C. B. Eap: Increased clozapine plasma concentrations and side effects induced by smoking cessation in 2 CYP1A2 genotyped patients. In: Ther Drug Monit. 27(4), Aug 2005, S. 539–543. PMID 16044115.
A. Frick, J. Kopitz, N. Bergemann: Omeprazole reduces clozapine plasma concentrations. A case report. In: Pharmacopsychiatry. 36(3), May 2003, S. 121–123. PMID 12806570.