1. Advanced Lightning, Power and Energy Research (ALPER), Department of Electrical and Electronics Engineering, Faculty of Engineering Universiti Putra Malaysia (UPM) Serdang Malaysia
2. Department of Electrical and Electronics Engineering Nigerian Defence Academy Kaduna Nigeria
3. Department of Mathematics, Faculty of Science Universiti Putra Malaysia (UPM) Serdang Malaysia
4. Department of Electrical Engineering Lorestan University Khoramabad Iran