Buttar, G.S., et al. “Effect of Quality of Irrigation Water and Nitrogen Levels Applied through Trickle Irrigation on Yield and Water Use Efficiency of Tomato under Semi-Arid Environment”. Indian Journal of Horticulture, vol. 71, no. 01, Mar. 2014, pp. 72-76, https://journal.iahs.org.in/index.php/ijh/article/view/1355.