1. Center for Electric Power Engineering, Kathmandu University,Department of Electrical and Electronics Engineering,Dhulikhel, Kavre,Nepal
2. School of Electrical and Information Engineering, University of Witwatersrand,Johannesburg,South Africa
3. Tribhuvan University,Department of Physics,Kathmandu,Nepal
4. Kathmandu University,Department of Electrical and Electronics Engineering,Dhulikhel, Kavre,Nepal