NAIK, I A, and A J GUPTA. 2011. “Effect of Plant Density and Integrated Nutrient Management on Growth, Yield, Quality and Economics of Kale (Brassica Oleracea Var. Acephala) in Temperate Region*”. The Indian Journal of Agricultural Sciences 80 (1). https://epubs.icar.org.in/index.php/IJAgS/article/view/2826.