XU, Z.-G.; SHI, F.-G. SP-convergence in $L$-topological spaces. Tamkang Journal of Mathematics, [S. l.], v. 38, n. 2, p. 139–151, 2007. DOI: 10.5556/j.tkjm.38.2007.84. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/84. Acesso em: 5 may. 2024.