His research explores the development of tantric Buddhist traditions in South Asia, and their dissemination in Tibet and East Asia, with a focus on the Yoginītantras, a genre of Buddhist tantric literature that focused on female deities and yogic practices involving the subtle body. He is the author of both The Cakrasamvara Tantra: A Study and Annotated Translation (New York: American Institute of Buddhist Studies, 2007), and The Cakrasamvara Tantra: Editions of the Sanskrit and Tibetan Texts (New York: American Institute of Buddhist Studies, 2012).