Mathematical Writing: A Great Style Guide for Technical Writers

If you are writing scientific papers with a lot of math equations you may want to have a look at the following style guideline:
http://tex.loria.fr/typographie/mathwriting.pdf
Mathematical Writing
by
Donald E. Knuth, Tracy Larrabee, and Paul M. Roberts
This report is based on a course of the same name given at Stanford University.
Here is  a sample:
Math Writing Guidelines
GREAT STUFF for scientists and engineers who find themselves writing peer-review papers, conference and lab reports, or any other articles that have math equations in them.