R. SINGH, S. BABU, R. AVASTHE, G. S. YADAV, T. K. CHETTRI, and A. SINGH, “Effect of organic mulches and vermicompost on productivity, profitability and energetic of mustard (Brassica campestris) in popcorn (Zea mays everta)- mustard cropping system in rainfed Sikkim Himalaya”, Indian J Agri Sci, vol. 88, no. 11, pp. 1735–1739, Nov. 2018, doi: 10.56093/ijas.v88i11.84916.