Login New user?   Mathematical Sciences Letters An International Journal   MSL Home   Submit an Article   Content   Forthcoming Papers   Subscription Author     Name : M. Abdelhakem Address : Department of mathmatics, Faculty of science, Helwan University, Cairo, Egypt\\ Canadian International College, Cairo, Egypt Email : mabdelhakem@yahoo.com Telephone : +201006603339   Home   About us   News   Journals   Conferences Contact us Copyright naturalspublishing.com. All Rights Reserved