Reviews of Numerical Recipes in C
- First and second editions, collected at Lysator.
- http://www.lysator.liu.se/c/num-recipes-in-c.html

Spline Bibliography
- Begun by Larry Schumaker and kept up by Carl de Boor. The references are sorted alphabetically by author, with a searchable index.
- http://www.cs.wisc.edu/~deboor/bib/bib.html

Numerical Recipes Home Page
- Books on-line, updates, and electronic purchasing.
- http://www.nr.com/

ArXiv Front: NA Numerical Analysis
- Numerical analysis section of the mathematics e-print arXiv.
- http://front.math.ucdavis.edu/math.NA