NEERAJA, G, et al. “Influence of Irrigation and Nitrogen Levels on Bulb Yield, Nutrient Uptake and Nitrogen Use Efficiencies in Rabi Onion (Allium cepa)*”. The Indian Journal of Agricultural Sciences, vol. 71, no. 2, Apr. 2014, https://epubs.icar.org.in/index.php/IJAgS/article/view/39551.