• Dril bu pa: Tôh. nos. 2106, 2107. Is it possible this is but a shortened form of the name Vajraghaṇṭa?
• Shaw, PE, pp. 134, 179-180, 193-194, 246.
• Blue Annals, pp. 389, 754, 811.
• Ghaṇṭāpā. No. 52 in Sempa Dorje. Illustration following p. 134. His name in Tibetan: Dril bu'i zhabs. He was a kṣatriya from Vārendra Nālandā. Contemporary of King Devapāla.
• Moriguchi, p. 18, lists an Uḍiyān(ādi)krama, or Cakrasaṃvarapañcakrama, in 5 leaves, which in Tôh. is attributed to Vajraghaṇṭa (the same person by a variant name, evidently).
• Jackson, ESM, p. 125.
• "Ghaṇṭāpādīya Pañcakrama." Bendall, Subhāṣita, folio 71. Also called Pañcakramopadeśa.
• Luczanits, Eight Great, p. 81.
• Linrothe, Holy Madness, pp. 210-211.
• Portraits of the Masters, p. 225. The inscription on the back of this image reads gril bu pa, an obvious mistake for Dril bu pa.

Bibliography:

• Gdams ngag nye bar bsdus pa. Tôh. no. 2106. Dergé Tanjur, vol. TSHI, folios 135v.4-136r.2. Tr. by Mañjuśrīsiddhi and Blo ldan shes rab.
  • Dergé colophon: slob dpon chen po dpal mai tri'i gdams ngag nye bar bsdus pa rdzogs so.
  • Kramer, rNgog, p. 67 (with transcription of the translation colophon). Sanskritic title given as Upadeśopasaṃhāra.
• 'Phags pa 'jam dpal gyi zab cing rgya che ba'i 'grel pa. Tôh. no. 2107. Dergé Tanjur, vol. TSHI, folios 136r.2-143r.2. Tr. by Mañjuśrīsiddhi and Blo ldan shes rab.
  • Dergé colophon: dpal mai tri pas mdzad pa nye bar bsuds shing / zab cing rgya che ba'i 'grel pa / mkhas pa chen po dril bu pas mdzad pa rdzogs so // // rgya gar gyi mkhan po manydzu shrī s[i] dā dang dge slong blo ldan shes rab kyis bsgyur ba'o.
  • Kramer, rNgog, p. 56. Title here given as Mañjuśrīgambhīravyākhyā. The name of the Indian translator is given as Mañjuśrīsattva (based on the Peking).