M.K. SINGH, R. THAKUR, U.N VERMA, R.R. UPASANI, S.K, and PAL, “Effect of planting time and nitrogen on productioh potential of basmati rice (Oryza sativa) cultivars in Bihar plateau”, IJA, vol. 45, no. 2, p. 45_2 , Oct. 2001, doi: 10.59797/ija.v45i2.3382.