1. A synthesis of the methyl-tryptamines and some derivatives;Manske;Can J Res,1931
2. Psychedelics encyclopedia;Stafford,1992
3. The botany and chemistry of hallucinogens;Schultes,1980
4. Pharmacotheon: entheogenic drugs, their plant sources and history;Ott,1993
5. TIHKAL: tryptamines I have known and loved;Shulgin,1997