1. Commercial activities related to psychoactive fungi use in Thailand;Allen;Boston Mycological Club News,1991
2. Psychoactive fungi use in Koh Samui and Koh Pha-Ngan, Thailand;Allen;Journal of Ethnopharmacology,1992
3. Psychoactive fungi in Thailand: some aspects of their relationship to human use, law and art;Allen;Integration: The Journal of Mind Moving Plants and Culture,1992
4. Index to the botanical identification and chemical analyses of the known species of hallucinogenic fungi;Allen;Integration: The Journal of Mind Moving Plants and Culture,1992
5. Variation der Indolalkaloide von Psilocybe cubensis durch unterschiedliche Kultivierungsbedingungen;Gartz;Beiträge zur Kenntnis der Pilze Mitteleuropas,1987