Matthew Kapstein, Pure Land Buddhism in Tibet? From Sukhāvatī to the Field of Great Bliss, contained in: Richard K. Payne and Kenneth K. Tanaka, eds., Approaching the Land of Bliss: Religious Praxis in the Cult of Amitābha, Studies in East Asian Buddhism no. 17, University of Hawai'i Press (Honolulu 2005?), pp. 16 51.