http://www.columbia.edu/~dg137/
http://www.columbia.edu/~dg137/music.html.
http://www.aber.ac.uk/~mts5/amysoc.html
http://www.durhamnews.net/~fmc701/
http://www.ibd.nrc.ca/~mansfield/
http://www.umn.edu/nlhome/m161/schn0170/acs.html
http://www.umn.edu/nlhome/m161/schn0170/ig/index.html.
http://home.aol.com/rbsayre
http://monsterbit.com/stammer/.