Dubey, Rakesh K., et al. “Effect of Nitrogen Levels and Cultivars on Growth and Yield Components of Potato in Foot Hills of Arunachal Pradesh”. Indian Journal of Horticulture, vol. 69, no. 04, Dec. 2012, pp. 545-9, https://journal.iahs.org.in/index.php/ijh/article/view/2040.