1. http://images.iop.org/dl/nano/wp/nanoparticles_WP.pdf
2. http://www.iiiee.lu.se/Publication.nsf/$webAll/D9CA9F1E83E4FA12C1256F9D00539C39/$FILE/Asgeir%20Helland.pdf
3. Nanomaterials: New Research Developments;Pertsov,2008
4. http://www.iscid.org/encyclopedia/Applications_of_Nanotechnology