Introduction to Altaic philology: Turkic, Mongolian, Manchu, by Igor de Rachewiltz and Volker Rybatzki; with the collaboration of Hung Chin-fu (Leiden; Boston: Brill, 2010).
“The Tung Brothers: Tung Wen-ping (1217-1278), Tung Wen-yung (1224-1297), Tung Wen-chung (1230-1281),” in Igor de Rachewiltz, Hok-lam Chan, Hsiao Ch’i-ch’ing and Peter W. Geier, eds., In the Service of the Khan: Eminent Personalities of the Early Mongol-Yuan Period (1200-1300) (Wiesbaden: Harrassowitz Verlag, 1993), pp. 621-645.