Sapthika Parthi.P, Hemavigasini.T.R, and Sarulatha.R. “Automation of Coal Bunker Using Arduino Controller”. International Journal of Intellectual Advancements and Research in Engineering Computations, vol. 6, no. 2, Mar. 2018, pp. 1382-7, https://ijiarec.com/ijiarec/article/view/663.