M.P.YADAV, J. RAI, S.P. KUSHWAHA, and G.K. SlNGH, “Production potential and economic analysis of various cropping systems for Central Plains Zone of Uttar Pradesh”, IJA, vol. 50, no. 2, pp. 83–85, Oct. 2001, doi: 10.59797/ija.v50i2.5070.