Chowdhury, N. H., D. Khushi, and M. M. Rashid. “Algorithm for Line Follower Robots to Follow Critical Paths With Minimum Number of Sensors”. International Journal of Computer (IJC), vol. 24, no. 1, Jan. 2017, pp. 13-22, https://www.ijcjournal.org/index.php/InternationalJournalOfComputer/article/view/819.