Abdul Rauf Khan
Department of Mathematics, Khwaja Fareed University of Engineering and
Information Technology, Rahim Yar Khan, Punjab, Pakistann
Zaheer Ahmad
Department of Mathematics, Khwaja Fareed University of Engineering and
Information Technology, Rahim Yar Khan, Punjab, Pakistan
Zafar Ullah
Department of Mathematics, University of Education, Lahore, Subcampus DG Khan, Punjab, Pakistan
Mohsin Bilal
Department of Mathematics, Khwaja Fareed University of Engineering and
Information Technology, Rahim Yar Khan, Punjab, Pakistan
Muhammad Kashif Maqbool
Department of Mathematics, The Islamia University of Bahawalpur, Bahawalpur, Punjab, Pakistan