http://www.cs.umass.edu/~greene/>
http://www.freenet.hamilton.on.ca/~aa343/Profile.html
http://www.hal.com/services/juggle/home/engjcc@leeds.ac.uk/
http://wwwcsc.Cornell_IOWA.edu/~jcragun/fruvous.html
http://wwwcsc.cornell-iowa.edu/~jcragun/fruvous.html
http://www.eden.com/~moxy/andrea.html
http://www.citw.ca/ashley/
http://www.freenet.hamilton.on.ca/~aa343/Profile.html
http://www.freenet.hamilton.on.ca/~aa343/ashley/main.html
http://www.idsonline.com/tripout
http://www.umn.edu/nlhome/g337/pelt0007/index.html