RIASAT, AYESHA; KANWAL, SALMA; JAVED, SANA. On odd-graceful labeling of disjoint union of graphs. Utilitas Mathematica , [S. l.], v. 101, 2016. Disponível em: https://utilitasmathematica.com/index.php/Index/article/view/1126. Acesso em: 7 may. 2026.