DONGSHENG, Y. A GENERAL METHOD FOR CONSTRUCTING REGULAR SUMMATION MATRIX. Tamkang Journal of Mathematics, [S. l.], v. 30, n. 1, p. 67–69, 2021. DOI: 10.5556/j.tkjm.30.1999.4210. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/4210. Acesso em: 13 mar. 2025.