I'm including the Bibliography to my thesis with the simple thebibliography environment provided by latex. Here is a sample of its content:
\begin{thebibliography}{39}
\bibitem{backprop}
Rumelhart David E.,
Geoffrey E. Hinton
and Ronald J. Williams.
\textit{``Learning representations by back-propagating errors.''}
Nature 323.6088 (1986): 533-536.
\bibitem{SIFT} Lowe, David G.
\textit{``Distinctive image features from scale-invariant keypoints.''}
International journal of computer vision 60, no. 2 (2004): 91-110.
\end{thebibliography}
If I understood correctly the content of this page, the number 39 I put between the brackets corresponds to a certain style the bibliography should have. In particular 39 corresponding to alpha which you can find at page 39 of this pdf.
Nevertheless when I compile my document I will still continue to see the citations in the [1] style and not with the [CODE] one.
What is going wrong here?
Moreover, I'd like to know how are the codes computed from the citation, e.g.:
[KK90] K.S.Narendra and K.Parthsarathy. Identification and control of dynamical system using neural networks. IEENN, 1(1):4–27, 1990.
and where, if possible, can I find them on the web?
- Is there a way to automatically alphabetically order the entries of the bibliography, or should I just pull up my sleeves and do it? ;)
Thanks in advance for any help you can provide.

\bibliographystyle{alpha}--- which has nothing (necessarily) to do with the\thebibliographyenvironment. – jon Nov 23 '12 at 10:32