E. NSANZABAGANWA, T. K. DAS, and D. S. RANA, “Nitrogen and phosphorus effects on the growth, phenology, heat and nutrients accumulation and yield of winter maize (Zea mays) in western Indo-Gangetic Plains”, Indian J Agri Sci, vol. 84, no. 5, pp. 661–4, May 2014, doi: 10.56093/ijas.v84i5.40494.