References
- Uchtenhagen A, Gutzwiller F, Dobler-Mikola A, Blättler R. Program for a medieval prescription of narcotics. Interim report of the research representatives. Addiction Research Institute, Zürich 1996
- Uchtenhagen A, Gutzwiller F, Dobler-Mikola A. The Medical prescription of narcotics programme. Second interim report of the research team, Abridged version. Addiction Research Institute, Zürich 1996