Cantwell, Cathy. “Reflections on Rasāyana, Bcud Len and Related Practices in Nyingma (Rnying Ma) Tantric Ritual”. History of Science in South Asia 5, no. 2 (December 31, 2017): 181–203. Accessed November 9, 2025. https://www.hssa-journal.org/index.php/hssa/article/view/17.