1. National Cheng Kung University,Dept. Electrical Engineering,Tainan City,Taiwan,701401
2. Universiti Malaya,Dept. Electrical Engineering,Kuala Lumpur,Malaysia,50603
3. Universiti Tunku Abdul Rahman,Dept. Electrical and Electronic Engineering,Kajang,Malaysia,43000
4. Indian Institute of Technology Roorkee,Dept. Electrical Engineering,Roorkee,U.K.,247667