B. T. N. KUMAR and H. B. BABALAD, “Soil organic carbon, carbon sequestration, soil microbial biomass carbon and nitrogen, and soil enzymatic activity as influenced by conservation agriculture in pigeonpea (Cajanus cajan) + soybean (Glycine max) intercropping system”, Indian J Agri Sci, vol. 88, no. 4, pp. 553–558, Apr. 2018, doi: 10.56093/ijas.v88i4.79107.