LACUNARY STATISTICALLY UPWARD AND DOWNWARD HALF QUASI-CAUCHY SEQUENCES. Journal of Mathematical Analysis, [S. l.], v. 13, n. 01, p. 12–23, 2026. DOI: 10.5281/85fvwv28. Disponível em: https://scopushub.com/index.php/JMA/article/view/2. Acesso em: 5 aug. 2026.