Kandil, A., Yakout, M., Zakaria, A.: New Approaches of Rough Sets via Ideals. In: Handbook of Research on Generalized and Hybrid Set Structures and Applications for Soft Computing / Sunil Jacob John, IGI Global, Pennsylvania, United States, 247-264, 2016. ISBN: 9781466697980
Kandil, A., Yakout, M., Zakaria, A.: New Approaches of Rough Sets via Ideals. In: Handbook of Research on Generalized and Hybrid Set Structures and Applications for Soft Computing / Sunil Jacob John, IGI Global, Pennsylvania, United States, 247-264, 2016. ISBN: 9781466697980