AMANATHULLA, S.; BERA, B.; PAL, M. L(2,1,1)-Labeling of Circular-Arc Graphs. Journal of Scientific Research, [S. l.], v. 13, n. 2, p. 537–544, 2021. DOI: 10.3329/jsr.v13i2.50483. Disponível em: https://banglajol.info/index.php/JSR/article/view/50483. Acesso em: 17 jul. 2024.