1. Arnold AJ. Machine Translation – An Introductory Guide. complete details located at http://clwww.essex.ac.uk/MTbook/
2. Hutchins WJ. History of Machine Translation in a Nutshell, complete details located at: http://ourworld.compuserve.com/homepages/WJHutchins/Nutshell.htm
3. Patent Information Users Group-Listserver (PIUG-L) Archives, http://www.derwent.com/archive/piug
4. Gerber L. Laurie's Links. published in issue 25 of Machine Translation News International, posted 25 July 2000. Complete details located at http://www.eamt.org/resources/
5. World Patent Information 1988;10(1):20–5