P JAYA MARY. Gap Approximation Numbers and Compactness. Mathematical Statistician and Engineering Applications, [S. l.], v. 71, n. 4, p. 12335–12340, 2022. DOI: 10.17762/msea.v71i4.2236. Disponível em: https://www.philstat.org/index.php/MSEA/article/view/2236. Acesso em: 14 feb. 2026.