K. D. SEHRAWAT, L. N. SINGH, and S. K. SHARMA, “EFFECT OF MUTAGENS ON THE ASSOCIATION BETWEEN VARIOUS TRAITS IN SIRATRO [MACROPTILlUMATROPURPUREUM (DC.) URB.]”, IJGPB, vol. 56, no. 01, pp. 117–120, Feb. 1996.