1. For part 107, see: Tóth, F.; Kalaus, Gy.; Greiner, I.; Kajtár-Peredy, M.; Gömöry, Á.; Hazai, L.; Szántay, Cs. Heterocycles 2007, 17, 865.
2. Indoles, Part 4: The Monoterpenoid Indole Alkaloids;Saxton,1983
3. The Monoterpenoid Indole Alkaloids: Supplement to Part 4;Herbert,1994