S.R. Upadhyay, K.B. Koirala, D.C. Paudel, S.N. Sah, D. Sharma, D.B. Gurung, R.C. Prasad, R.B. Katuwal, B.B. Pokhrel, R.K. Mahato, R. Dhakal, N.B. Dhami, T.P. Tiwari, G. Ortiz- Ferrara and R.C. Sharma
Asian Journal of Plant Sciences 7 ( 4 ): 375 - 381 , 2008