Kashyap, A. S., et al. “Effect of Organic Manures and Biofertilizers on the Productivity of Tomato and Bell Pepper under Mid-Hill Conditions of Himachal Pradesh”. International Journal of Economic Plants, vol. 1, no. May, 1, June 2014, pp. 036-9, https://ojs.pphouse.org/index.php/IJEP/article/view/4389.