P. M. Rao, G. E. C. H. V. Sagar, K. Suresh, G. Padmaja, and S. N. Reddy, “An Economic Evaluation of Maize–Mustard Cropping System in Response to the Complementary Influence of Organic and Inorganic Source of Nutrients”, IJEP, vol. 13, no. July, 4, pp. 01–10, Jul. 2026.