Umair Khalid Qureshi
Department of Business Administration, Shaheed Benazir Bhutto University, Sanghar, Sindh, Pakistan
Sanaullah Jamali
Institute Mathematics and Computer Science, University of Sindh Jamshoro, Pakistan
Zubair Ahmed kalhoro
Department of Mathematics, University of Sindh Laar campus, Badin, Sindh, Pakistan
Guan Jinrui
Department of Mathematics, Taayuan Normal University, China