Bragazzi, N. L., H. Khabbache, I. Vecchio, M. Martini, M. Perduca, R. Zerbetto, and T. S. Re. “Ancient Shamanism and Modern Psychotherapy: From Athropology to Evidence-Based Psychodelic Medicine”. Cosmos and History: The Journal of Natural and Social Philosophy, vol. 14, no. 1, Jan. 2018, pp. 142-5, http://cosmosandhistory.org/index.php/journal/article/view/688.