* A. C. Banerjea, "Studies in the ", Motilal Banarsidass (1963)* E. R. Sreekrishna Sarma, "", Wiesbaden (1968, comm.
* A. C. Banerjea, "Studies in the ", Motilal Banarsidass (1963)* E. R. Sreekrishna Sarma, "", Wiesbaden (1968, comm.