Williams P. The Samadhi of Direct Encounter with the Buddhas of the Present: An Annotated English translation of the Tibetan version of the Pratyutpanna-Buddha-Sammukhavasthita-Samadhi-Sutra. Translated by Paul Harrison. BSRV. 1992;9(2):203-209. doi:10.1558/bsrv.v9i2.15290