This is BibTeX, Version 0.99cThe top-level auxiliary file: C:\Documents and Settings\acer\Documenti\Riga e compasso\Lezione2.aux
I found no \citation commands---while reading file C:\Documents and Settings\acer\Documenti\Riga e compasso\Lezione2.aux
I found no \bibdata command---while reading file C:\Documents and Settings\acer\Documenti\Riga e compasso\Lezione2.aux
I found no \bibstyle command---while reading file C:\Documents and Settings\acer\Documenti\Riga e compasso\Lezione2.aux
(There were 3 error messages)