S. SHEORAN, D. RAJ, R. S. ANTIL, V. S. MOR, and K. S. GREWAL, “Soil microbial properties influenced with long term application of manures and fertilizers”, Indian J Agri Sci, vol. 90, no. 1, pp. 172–182, Mar. 2020, doi: 10.56093/ijas.v90i1.98667.