Analysis of information sources in references of the Wikipedia article "Suy tàn của Phật giáo ở tiểu lục địa Ấn Độ" in Vietnamese language version.
Nalanda, together with the colleges at Vikramasila and Odantapuri, suffered gravely during the conquest of Bihar by the Muslim general Muhammad Bhakhtiyar Khalji between A.D. 1197 and 1206, and many monks were killed or forced to flee.