Name of a western Tibetan king, several images survive with his ownership marks on them. See for example Pratapaditya Pal, Kashmir and the Tibetan Connection, Marg, vol. 40, no. 2 (1988), p. 62, and figures 9, 10 and 11 on p. 63.
See the article by Ian Alsop in Tibetan Art: Towards a Definition of Style, Weatherhill (London 1997).
Ajay Kumar Singh, Some Inscribed Bronzes associated with Nagaraja, the Ordained Prince of Guge in Western Tibet: A New Breakthrough, contained in: Karenina Kollmar-Paulenz, Christian Peter, eds., Tractata Tibetica et Mongolica: Festschrift fur Klaus Sagaster zum 65. Geburtstag, Harrassowitz Verlag (Wiesbaden 2002), pp. 231-239.