JAVAID, IMRAN; ISMAIL, ABIDA; SALMAN, MUHAMMAD; AHMAD, ALI; SLAMIN. Labeling of chordal rings. Utilitas Mathematica , [S. l.], v. 90, 2013. Disponível em: https://utilitasmathematica.com/index.php/Index/article/view/997. Acesso em: 8 may. 2026.