 The currently available works (commentaries on the treatises of the Indian Buddhist forefathers and independent compositions), written in Tibetan, range from the 11th c. to the present days. This abundant literature has for the most part not been studied outside the Tibetan framework of monastic studies; the majority of works has never been edited, only a few are translated, mostly only partially. In particular, material representative of the formative phase of Tibetan epistemology only became available in the last two decades.