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(1987) „The occurrence of psilocybin and psilocin in Finnish fungi”. Journal of Natural Products50 (4), 741–44. o. DOI:10.1021/np50052a030. PMID 3430170.
(1978) „Abuse of indigenous psilocybin mushrooms: a new fashion and some psychiatric complications”. British Journal of Psychiatry132, 602–604. o. DOI:10.1192/bjp.132.6.602. PMID 566144.