Diana, Erna Lus, et al. “Pengaturan Lampu Lalu Lintas Di Persimpangan Jalan Ahmad Yani Giant Dengan Aplikasi Pewarnaan Teori Graf”. MUST: Journal of Mathematics Education, Science and Technology, vol. 1, no. 1, May 2016, pp. 69-85, doi:10.30651/must.v1i1.99.