This is e-TeX, Version 3.141592-2.2 (MiKTeX 2.4) (preloaded format=latex 2005.11.21)  6 DEC 2005 13:45
entering extended mode
**bibliography.tex
(bibliography.tex
LaTeX2e <2003/12/01>
Babel <v3.8a> and hyphenation patterns for english, french, german, ngerman, du
mylang, nohyphenation, loaded.

! LaTeX Error: Environment thebibliography undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1 \begin{thebibliography}
                           {99}
?