Fundamental Tantra on the luminous self-originated wrathful aspect of the Buddha-nature., Text acquired in Tibet by HRH Prince Peter of Greece and Denmark (1908-1980)., Philosophy (apocryphal text) og Catalogue of Tibetan manuscripts and xylographs by Hartmut Buescher and Tarab Tulku. Copenhagen: Curzon – Det Kongelige Bibliotek, 2000. Vol. 1. p. 112