1) Tibetan Buddhist text 
The `Yogatantra` (Sanskrit) `conveyance` (Sanskrit: yana) is the most sublime of the three Outer Tantras. It includes a class of Buddhist tantric literature as well as `praxis` (Sanskrit: sadhana) associated with this class. The Yogatantra yana is evident in both the Sarma traditions of Tibetan Buddhism as well as the Nine Yana path of the N...