User:Collin Stocks

Books
DSA Open Book

Useful Stuff
$$\left(2\pi\sigma^2\operatorname{exp}\left\{\frac{\left(x - \mu\right)^2}{\sigma^2}\right\}\right)^{-\frac{1}{2}}$$

Articles
http://www.scribd.com/doc/191694547/Calculating-Pythagorean-Triples