Authors
Mian Bahadur Zada
Department of Mathematics, University of Malakand,, Chakdara, Pakistan
Muhammad Sarwar
Department of Mathematics, University of Malakand,, Chakdara, Pakistan
© 2017 Mian Bahadur Zada, Muhammad Sarwar, published by University of Silesia in Katowice, Institute of Mathematics
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.