Bairwa, L.N., and S.K. Khandelwal. 2010. “Effect of Zinc on Growth and Seed Yield of Bottle Gourd and Their Residual Effect on Succeeding Carrot Crop”. Indian Journal of Horticulture 67 (Special Issue):268-70. https://journal.iahs.org.in/index.php/ijh/article/view/2173.