1. List of Electric Automobiles, http://www.hybridcars.com/electric-car.
2. Ceramic Ball Bearings, http://www.vxb.com/Merchant2/merchant.mvc?Screen=CTGY&Store_Code=bearings&Category_Code=FullCeramicBearings.
3. Spinning yarn from long carbon nanotube arrays;Jayasinghe;Journal of Materials Research,2011
4. Nanomedicine Devices “Tiny Machines” to Change the Outcome for Patients;Schulz,2010
5. UC Nanoworld and Smart Materials and Devices Laboratory, www.min.uc.edu/nanoworldsmart.