1. School of Mathematics and Physics, Queen's University Belfast, Northern Ireland, BT7 1NN, UK</br>2. Adjunct Professor, Faculty of Business and Information Technology, Ontario Tech University, Ontario K7L 3N6, Canada
Prof. Adele Marshall
1. School of Mathematics and Physics, Queen's University Belfast, Northern Ireland, BT7 1NN, UK</br>2. Adjunct Professor, Faculty of Business and Information Technology, Ontario Tech University, Ontario K7L 3N6, Canada