Consumption of psilocybin-containing hallucinogenic mushrooms by young people
JF Lassen, NF Lassen, J Skov - Ugeskrift for laeger, 1992 - ncbi.nlm.nih.gov
Fungi containing psilocybin hallucinogens. Wild Danish mushrooms containing intoxicants.
JF Lassen, HB Ravn, SF Lassen - Ugeskrift for Læger, 1990 - cabdirect.org