COMSATS Institute of information Technology, Islamabad

Professor of Mathematics, Universiti Kebangsaan Malaysia

Professor of Mathematics, University of Turku, Finland

Professor, Indian Institute of Technology Madras, Chennai 600036

Department of Mathematics, National Institute of Technology, Tiruchirappalli

Distinguished Professor @ Massey University, NZ

Professor, University of Kassel

Babeş-Bolyai University and Óbuda University

Associate Professor of Mathematics, Rajasthan Technical University, Kota, India

Professor Emeritus of Mathematics, Department of Mathematical Sciences, University of …