1. Central Electricity Authority : www.cea.nic.in
2. Madhya Gujarat Vij Co. Ltd. : www.mgvcl.in
3. Dakshin Gujarat Vij Co. Ltd. : www.dgvcl.com
4. Gujarat Electricity Transmission Co. : www.getcogujarat.com
5. Chief Electrical Inspector of Gujarat : www.ceiced.gujarat.gov.in
6. Consulting Electrical Engineers Association of Maharashtra : www.ceeama.org
7. Free Electrical Software : www.electrical-engineering-portal.com/author/jiguparmar
8. Free AutoCAD drawings : www.bibliocad.com
9. Threaded Discussion Group : http://cr4.globalspec.com