RANA, A. On the Total Vertex Irregular Labeling of Proper Interval Graphs. Journal of Scientific Research, [S. l.], v. 12, n. 4, p. 537–543, 2020. DOI: 10.3329/jsr.v12i4.45923. Disponível em: https://www.banglajol.info/index.php/JSR/article/view/45923. Acesso em: 4 may. 2024.