NAGARAJAN, SHANTHA, et al. “Influence of Steckling Transplanting Dates on Heat-Unit Requirement of Bolting and Subsequent Seed Yield and Quality of Asiatic Carrot (Daucus Carota)”. The Indian Journal of Agricultural Sciences, vol. 71, no. 8, Apr. 2014, https://epubs.icar.org.in/index.php/IJAgS/article/view/40142.