Surendrabodhi, Śīlendrabodhi and Dharmatāśīla (9th century A.D.), "’Phags pa byaṅ chub sems dpa’i sde snod ces bya ba thegs chen po’i mdo" (Tibetan translation of Bodhisatvapiṭakasūtra), in Kg dkon brtsegs, kha 255b1-ga 205b1.