Login New user?   Mathematical Sciences Letters An International Journal   MSL Home   Aim and Scope   For Reviewers   For Authors   Editorial Board   Publication Ethics   Processing Charges   Submit an Article   Content   Forthcoming Papers   Subscription Author     Name : Mohamed A. Abd El salam Address : Mathematics Department, Faculty of Science, Al-Azhar University, Nasr-City, 11884, Cairo, Egypt Email : mohamed salam1985@yahoo.com; mohamed salam@azhar.edu.eg. Telephone :   Home   About us   News   Journals   Conferences Contact us Copyright naturalspublishing.com. All Rights Reserved