Zimmermann, Michael. "A Preliminary Analysis of the Tathāgatagarbhasūtra as Found in the Lang Kanjur." In "Establishing the Succession of the Sakya Lamas of Näsar Gompa and Lang Gompa in Dolpo (Nepal)," by Klaus-Dieter Mathes. Appendix, Wiener Zeitschrift für die Kunde Südasiens 47 (2003): 104–5. http://austriaca.at/0xc1aa5576_0x00040b80.pdf.
An important sūtra source for the Ratnagotravibhāga, particularly for its discussion of the nine examples that illustrate how all sentient beings possess buddha-nature.
Sakya - The Sakya tradition developed in the eleventh century in the Khön family of Tsang, which maintained an imperial-era lineage of Vajrakīla and which adopted a new teaching from India known as Lamdre. Tib. ས་སྐྱ་
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