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Ruhland M, Krähling H, Fuchs A, Schön U (November 1988). „KC 9172 (free base of KC 7218)--an antipsychotic/anxiolytic compound. I. Antipsychotic and anxiolytic activity in comparison with chlorpromazine, clozapine, diazepam and buspirone”. Pharmacopsychiatry21 (6): 396–8. DOI:10.1055/s-2007-1017024. PMID2907649.
Krähling H, Fuchs A, Ruhland M, Schön U, Mol F, Tulp M (November 1988). „KC 9172 (free base of KC 7218)--an antipsychotic/anxiolytic compound. II. Discrimination from typical neuroleptics and benzodiazepine-like minor tranquilizers”. Pharmacopsychiatry21 (6): 399–401. DOI:10.1055/s-2007-1017025. PMID2907650.
Ahlenius S, Wijkström A (November 1992). „Mixed agonist-antagonist properties of umespirone at neostriatal dopamine receptors in relation to its behavioral effects in the rat”. European Journal of Pharmacology222 (1): 69–74. DOI:10.1016/0014-2999(92)90464-F. PMID1361441.