EL SEIDY, Essam; HUSSEIN, Salah Eldin; MOHAMED, Atef. Properties of the characteristic polynomials and spectrum of Pn and Cn. International Journal of Applied Mathematical Research, [S. l.], v. 5, n. 2, p. 132–137, 2016. DOI: 10.14419/ijamr.v5i2.6106. Disponível em: https://sciencepubco.com/index.php/ijamr/article/view/6106.. Acesso em: 5 may. 2024.