LaTeX has hundreds of tags that can be inserted to represent symbols and special characters. The easiest way to insert a specialized character is to use to menu between the file viewer and the source code window.
To add a special character, click on the type of character you would like to add. You can add the following categories of characters:
Relational symbols
Greek Letters
Arrows
Delimiters
Miscellaneous symbols
Foreign characters
\bibitem is a command used to enter a reference in your document to a bibliography item. The syntax for using the command \bibitem is \bibitem[label]{key}.
The optional [label] is for the user to add their own labeling system for the bibliography entry. If no label is set, the entries will be set in numerical order. [1], [2],[3], etc.
The argument {key} is used to reference and link the command \bibitem and \cite to each other and the information they contain. The command \cite contains the information about the source such as author, publisher, etc. whereas the \bibitem command contains the physical location of the bibliography within the text itself . Both corresponding \bibitem and \cite must have the same {key}, the easiest way to organize keys is by author's last name. The secondary {} in {thebibliography} denotes the maximum number of bibliography items you can have. So, having {99} bibitems means I can have between 0 and 99 bibitems since the bibitem must contain two-digit numbers.
The bibliography is a separate file from your main source code, and an example of code for the bibliography would look like the following:
\begin{thebibliography}{50} \bibitem{Simpson} Homer J. Simpson. \texts]{Mmmmm...doughnuts}. Evergreen Terrace Printing Co., Springfield, SomewhereUSA, 1998 \end{thebibliography)
Then, your main source code would contain the location of the information relating to the \bibitem using \cite. That source code would look similar to this:
My thesis, about the philosophy of The Simpsons\copyright comes from my favorite book \cite{Simpson}.
The final product in my document would then look like this:
[1] Homer J. Simpson. Mmmmm...doughnuts. Evergreen Terrace Printing Co., Springfield, Somewhere, 1998.
The easiest way to work with bibitem and cite is to use the toolbar option drop-down box marked label. When you select a citation to insert, you will be given the list of bibitems you have created so far and will be able to select the reference from the list. Kile can now work together with BibTeX editor applications such as gBib and pyBliographer to help make citations easier for the user.