M.C. MEENA, et al. “Effect of Integrated Nutrient Management on Productivity and Soil Health in Pigeonpea (Cajanus Cajan)-Wheat (Triticum Aestivum) Cropping System”. Indian Journal of Agronomy, vol. 57, no. 4, Oct. 2001, pp. 333-7, https://doi.org/10.59797/ija.v57i4.4658.