Computer Science

Bibtex

BibTeX is a citation system frequently used in some areas of computer science, mathematics, and physics. It was created for use with the LaTeX markup system for mathematical notation, but is usable with other tools as well. Software for using LaTeX and BibTeX is widely available, much of it under open source or similar licensing.

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BibTeX.org
Describes the BibTeX format, how to use BibTeX, suggests tools for using BibTeX.
Rough guide to using BibTeX
Quick starter guide plus lengthier instructions on the ins and outs of BibTeX