Approximation People
- A list of home pages kept at the University of Erlangen.
- http://www.mi.uni-erlangen.de/at-net/homepages.html

Approximation and Imaging
- Université de Pau. Research topics, faculty, publications, meetings.
- http://www.univ-pau.fr/~cgout/app.htm

A View from the Back of the Envelope
- About approximation and the fun it enables. Includes examples, exercises, and links to help grasp concepts such as measurement, scale and magnitude. Sections include simplifying numbers, exponential notation, Fermi problems, using your body as a ruler, a
- http://www.vendian.org/envelope/

People in Approximation Theory
- Amos Ron's list of links.
- http://www.cs.wisc.edu/~amos/atpeople.html

NZ Approximation Theory Group
- Members, meetings, visitors and links.
- http://www.math.auckland.ac.nz/~waldron/NZATG/

History of Approximation Theory
- Articles and web resources developed by Allan Pinkus and Carl de Boor.
- http://www.math.technion.ac.il/hat/

A Short Course on Approximation Theory
- Lecture notes for a graduate course by Neal Carothers, Bowling Green State University. (DVI,PS)
- http://personal.bgsu.edu/~carother/Approx.html

Approximation Theory Network (AT-NET)
- Publishes a Bulletin and lists journals, theses, people, events and other links.
- http://www.uni-giessen.de/www-Numerische-Mathematik/at-net/

Approximation Theory
- Notes for courses given by Carl de Boor, Madison. (PS)
- http://www.cs.wisc.edu/~deboor/ma887.html