[4] MAPS - Volume 6 Number 1 Autumn 1995 - spiritual uses of MDMA in traditional religion
mdma.net
Roland W. Freudenmann, Florian Öxler, Sabine Bernschneider-Reif (2006). The origin of MDMA (ecstasy) revisited: the true story reconstructed from the original documents. Addiction 101, 1241–1245. PMID16911722PDF
Benzenhöfer, U. and Passie, T. (2006). The early history of "Ecstasy." Nervenarzt 77, 95–99. (Artikel på tyska) PMID PDF
nih.gov
ncbi.nlm.nih.gov
Roland W. Freudenmann, Florian Öxler, Sabine Bernschneider-Reif (2006). The origin of MDMA (ecstasy) revisited: the true story reconstructed from the original documents. Addiction 101, 1241–1245. PMID16911722PDF