IQBAL, W.; SHOAIB, M. .; AHMAD, J. .; BUTT, M. A. .; KHALID, A. .; ADNAN, M. Parametric and Non-Parametric Spectral Signal Processing Techniques for Estimation of Periodicity in Sunspot Numbers: Spectral signal processing techniques for estimation of preiodcity in sun spot numbers. Proceedings of the Pakistan Academy of Sciences: A. Physical and Computational Sciences, [S. l.], v. 56, n. 1, p. 9–20, 2021. Disponível em: https://ppaspk.org/index.php/PPAS-A/article/view/146. Acesso em: 8 nov. 2024.