Spehia, R.S., et al. “Effect of in-Situ Conservation Practices on Soil Properties and Yield of Broccoli under Rainfed Conditions of Mid Hill Zone of Himachal Pradesh”. Indian Journal of Horticulture, vol. 69, no. 01, Apr. 2012, pp. 129-32, https://journal.iahs.org.in/index.php/ijh/article/view/1714.