Correlation analysis between the sunspots and the Nile flood. MAUSAM, [S. l.], v. 41, n. 4, p. 55–58, 1990. DOI: 10.54302/mausam.v41i4.2784. Disponível em: https://mausamjournal.imd.gov.in/index.php/MAUSAM/article/view/2784. Acesso em: 22 dec. 2025.