S426: Dpal rdo rje nag po chen po'i zab mo'i chos skor rnams byuṅ ba'i tshul legs par bśad pa bstan sruṅ chos kun gsal ba'i ñin byed: a detailed historical account of the Mahākāla traditions in India and Tibet
dpal rdo rje nag po chen po'i zab mo'i chos skor rnams 'byung ba'i tshul legs par bshad pa bstan srung chos kun gsal ba'i nyin byed/
mgon po chos 'byung [1979] (vol. 1, p. 1)