1. Feynman’s whole lecutre is a must read for any student interested in nanotechnology, The full text is available at: http://www.zyvex.com/nanotech/feynman.html
2. Debashish Chowdhury, Natural Nano-Machines, Resonance, Vol.12, Nos. 1 and 2, 2007.
3. Alan A Simpson, Yizhi Tao, Petr G. Leiman, Mohammed O Badasso, Yongning He, Paul J Jardinek, Norman H Olson, Marc C Morais, Shelley Grimes, Dwight L Anderson, Timothy S Baker and Michael G Rossmann, Nature, Vol.408, p.745, 2000.
4. The webpages of Prof G Kaiser contain beautiful illustrations of several biological processes. It may be found at: http://student.ccbcmd.edu/courses/bio141/lecguide/unit3/viruses/prodlc.html
5. http://news.uns.purdue.edu/html4ever/001206.Rossmann.DNAmotor.html