APPLICATION OF ODD HARMONIOUS LABELLING OF GRAPHS. INTERNATIONAL JOURNAL OF ADVANCED RESEARCH AND REVIEW (IJARR), [S. l.], v. 7, n. 4, p. 31–40, 2022. Disponível em: https://www.ijarr.org/index.php/ijarr/article/view/410.. Acesso em: 1 may. 2026.