On Finitely Null-additive and Finitely Weakly Null-additive Relative to the σ–ring. Baghdad Science Journal, Iraq, Baghdad, v. 19, n. 5, p. 1148, 2022. DOI: 10.21123/bsj.2022.5771. Disponível em: https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/5771.. Acesso em: 6 may. 2024.