1. K Kelly,Out of Control: The New Biology of Machines, Social Systems, and the Economic World, Perseus Books, Cambridge, 1994.
2. B Culshaw,Smart Structures and Materials, Artech House, Boston, 1996.
3. G B Dyson,Darwin Among the Machines: The Evolution of Global Intelligence, Perseus Books, Cambridge, 1997.
4. A V Srinivasan and M McFarland,Smart Structures: Analysis and Design, Cambridge University Press, Cambridge, 2001.
5. V K Wadhawan, Ferroic Materials: A Primer,Resonance, July 2002, p. 15.