Salama, R.B. (1987). «The evolution of the River Nile, The buried saline rift lakes in Sudan». J. African Earth Sciences6 (6): pp 899-913. ISSN0731-7247. doi:10.1016/0899-5362(87)90049-2.
Salama, R.B. (1987). «The evolution of the River Nile, The buried saline rift lakes in Sudan». J. African Earth Sciences6 (6): pp 899-913. ISSN0731-7247. doi:10.1016/0899-5362(87)90049-2.