Mahāyāna Purification ; the confession Sūtra with commentary by Ārya Nāgārjuna. the practice of Vajrasattva with Sādhana - Beresford, Brian C.; Ngag-dbang-dar-rgyas; Nāgārjuna, Ārya; Nāgārjuna ca. 2. Jh.; Sādhana; Sādhana (Meditational series, 1980)