recovered by Sir Aurel Stein; described by Fred H. Andrews
Oxford Universityu Press, 1948
Buku Referensi
edited by Ali Banuazizi, Myron Weiner
Indiana University Press, 1994
Buku Teks
Rice, Tamara Talbot
Praeger, 1965
Buku Teks
Richards P.
Croom Helm, 1981
Buku Teks
Rahul, Ram
Vikas, 1982
Buku Teks