Billerot, A., J. de Sigoyer, S. Duchêne, O. Vanderhaeghe, and M. Pubellier. “Songpan Garze Fold Belt: New Petrological and Geochronological Data”. Himalayan Journal of Sciences, vol. 5, no. 7, Sept. 2008, p. 32, doi:10.3126/hjs.v5i7.1239.