Login New user?   06- TWMS Journal of Pure and Applied Mathematics An International Journal   TWMS Home   Submit an Article   Content   Forthcoming Papers   Subscription Author     Name : IBRAHIM M. E. ABDELSTAR Address : Department of Mathematics, Faculty of Science, Al-Azhar University, Nasr City, Cairo, Egypt- Quantitative methods Unit, Faculty of Business & Economics Qassim University, Qassim, Buridah, Saudi Arabia Email : essonny19@gmail.com Telephone :   Home   About us   News   Journals   Conferences Contact us Copyright naturalspublishing.com. All Rights Reserved