NAYAK, H S, et al. “Effect of Nitrogen Point Placement on Energetic and Soil Enzymatic Activities on Long-Term Conservation Agriculture Based Maize (Zea Mays) - Wheat (Triticum Aestivum) System of Western Indo-Gangetic Plains”. The Indian Journal of Agricultural Sciences, vol. 89, no. 12, Dec. 2019, pp. 2102–2106, https://doi.org/10.56093/ijas.v89i12.96282.