The Long-term structural effect of Coronal index solar activity on the ENSO and QBO Time series data using Fractal Dimension. Punjab University Journal of Mathematics, [S. l.], v. 53, n. 2, p. 147–161, 2025. Disponível em: https://pujm.pu.edu.pk/index.php/pujm/article/view/258. Acesso em: 29 jun. 2025.