Journal of the Egyptian Mathematical Society
Journal of the Egyptian Mathematical Society > 2014 > 22 > 2 > 275-279
Journal of the Egyptian Mathematical Society > 2015 > 23 > 3 > 546-557
Journal of the Egyptian Mathematical Society > 2016 > 24 > 1 > 83-85
Journal of the Egyptian Mathematical Society > 2017 > 25 > 4 > 369-374