KULLI, V. R.; BASAVANAGOUD, B.; NIRANJAN, K. M. Quasi-total Graphs with Crossing Numbers. Journal of Scientific Research, [S. l.], v. 2, n. 2, p. 257–263, 2010. DOI: 10.3329/jsr.v2i2.3527. Disponível em: https://www.banglajol.info/index.php/JSR/article/view/3527. Acesso em: 4 may. 2024.