Syahmarani, Aghni, and Saib Suwilo. “VERTEX EXPONENTS OF A CLASS OF TWO-COLORED HAMILTONIAN DIGRAPHS”. Journal of the Indonesian Mathematical Society 18, no. 1 (July 1, 2012): 1–19. Accessed May 8, 2024. https://jims-a.org/index.php/jimsa/article/view/105.