Leonard W.J. van der Kuijp, A Tibetan Magus at the Mongol Court of Külüg Qaghan (the Wuzong Emperor): The Case of G.yung ston Rdo rje dpal (1287-1365), a forthcoming article. Announced in Kuijp, KPTB, p. 10.
Rgyal ba g.yung gi rnam thar bsdus pa zhig. Drepung Catalog, p. 1559.
Dungkar Rinpoche's dictionary, p. 1877. There is an autobiography entitled Ngo mtshar rgya mtsho'i rba rlabs kyi rang sgra.
There is a woodblock depiction in Tucci's Tibetan Painted Scrolls, figure 96 at p. 435.
Jackson, Patron, p. 172, no. 13; 189 (here dates given as 1284-1365).