SHALTOUT, M. A. M. .; TADROS, M. T. Y. . 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: http://103.215.208.102/index.php/MAUSAM/article/view/2784. Acesso em: 19 sep. 2024.