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+BibTeX
+~~~~~~
+
+The previous section explained the process of listing references at the end of a document and embedding cross references. In this section let us explore the BibTeX environment for keeping track of references.
+
+Using BibTeX is a very convenient method to use, when writing multiple documents in a single area or field. BibTeX allows you to create a database of all your references and use them as and when required. 
+
+The BibTeX database is stored in a ``.bib`` file. The structure of the file is quite simple and an example is shown below. 
+::
+
+  @book{Lamport94,
+  author    = "Leslie Lamport",
+  title     = "A Document Preparation System: User's Guide and Reference",
+  publisher = "Addison-Wesley Professional",
+  year      = "1994",
+  edition    = "second",
+  note      = "illustrations by Duane Bibby"
+  }
+
+Each bibliography entry starts with a declaration of the type of the reference being mentioned. The reference is in the above example is of the book type. BibTeX has a wide range of reference types, for example, ``article, book, conference, manual, proceedings, unpublished``.
+
+The type of reference is followed by a left curly brace, and immediately followed by the citation key. The citation key, ``Lamport94`` in the example above is used to cite this reference using the command ``\cite{Lamport94}``. 
+
+This is followed by the relevant fields and their values, listed one by one. Each entry must be followed by a comma to delimit one field from the other. 
+
+To get your LaTeX document to use the bibliography database, you just add the following lines to your LaTeX document. 
+::
+
+  \bibliographystyle{plain}
+  \bibliography{LaTeX}
+
+Bibliography styles are files that tell BibTeX how to format the information stored in the ``.bib`` database file. The style file for this example is ``plain.bst``. Note that you do not need to add the ``.bst`` extension to the filename.  If you wish to achieve a particular style of listing the bibliography items and citing them, you should use an appropriate style file. 
+
+The ``bibliography`` command specifies the file that should be used as the database for references. The file used in this example is ``LaTeX.bib``
+