CHANGQIN, X. . A note on completely positive graphs $($II$)$. Tamkang Journal of Mathematics, [S. l.], v. 31, n. 2, p. 159–164, 2000. DOI: 10.5556/j.tkjm.31.2000.408. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/408. Acesso em: 3 dec. 2024.