Hussain, M J, et al. “Effect of Urea Super Granule and Prilled Urea on Yield and Yield Attributes of Broccoli (<i>Brassica oleracea< i> Var. <i>italica< I> L.)”. The Agriculturists, vol. 14, no. 2, Feb. 2017, pp. 95-112, doi:10.3329/agric.v14i2.31354.