«BibTex is a LaTeX-related tool to handle bibliography developed by Oren Patashnik around 1988. Bibliographic entries are stored in a separate file (with extension .bib) than the LaTeX source, which only reference them through keys with the \cite macro. The command line program bibtex use this external file and the information output by previous latex invocations to produce LaTeX code than the next latex invocations will include in the document.[1]»