Bibliography

Strauch, A. 1876. Otdiel' III. Presm'ikaiushchiiasia i Zemnodn'iia. Przewalski, N. M. ed., Mongoliia i strana tangutov; trechletnee puteshestvieh v voctochnoi Nagornii Azii [= Mongolia and the Tangut Country: A Three Years' Journey in the Eastern Highlands of Asia]. Volume 2: 1–51. Sankpeterburg, Izd. Imp. Russkago Ob-va.