Department of Mathematics;
Faculty of Science;
Universiti Teknologi Malaysia;
Science and Technology;
81310 UTM Skudai;
Johor;
Malaysia;
Ibnu Sina Institute for Fundamental Sciences;
Faculty of Science;
Universiti Teknologi Malaysia;
Science and Technology;
81310 UTM Skudai;
Johor;
Malaysia;
School of Mathematics and Centre for Differential Equations;
Continuum Mechanics and Applications;
University of the Witwatersrand;
Johannesburg Wits 2050;
South Africa;