Schwabl, Herbert, and Jan M.A. van der Valk. “Challenging the Biomedical Notion of ‘Active Substance’: The Botanical Plasticity of Tibetan Medical Formulas”. HIMALAYA - The Journal of the Association for Nepal and Himalayan Studies, vol. 39, no. 1, Jan. 2023, pp. 208-1, doi:10.2218/himalaya.2019.7885.