SLAMIN, S; MILLER, Mirka. On The Existence of Non-Diregular Digraphs of Order Two Less than the Moore Bound. Jurnal ILMU DASAR, [S.l.], v. 12, n. 1, p. 1-5, jan. 2011. ISSN 2442-5613. Available at: <https://jurnal.unej.ac.id/index.php/JID/article/view/70>. Date accessed: 13 aug. 2020.