Dpal Gsaṅ baʼi sñiṅ poʼi rgyud kyi khog dbub - Roṅ-zom Chos-kyi-bzaṅ-po, 11th cent (s.n., 1977)
On the history of the chief Nyingmapa tantra of the Mahāyoga class, the Guhyagarbha or Guhyamūle.