NIKOLOV, G.; PETROVA, B. On the regularity of certain three-row almost Hermitian incidence matrices. Ann. Sofia Univ. Fac. Math. and Inf., [S. l.], v. 107, p. 131–137, 2020. DOI: 10.60063/gsu.fmi.107.131-137. Disponível em: https://stipendii.uni-sofia.bg/index.php/fmi/article/view/108. Acesso em: 6 may. 2024.