This is pdfTeX, Version 3.141592-1.40.3 (Web2C 7.5.6) (format=latex 2008.3.22)  22 MAY 2008 17:52
entering extended mode
**bibliography.bib
(./bibliography.bib
LaTeX2e <2005/12/01>
Babel <v3.8h> and hyphenation patterns for english, usenglishmax, dumylang, noh
yphenation, basque, bulgarian, coptic, welsh, czech, slovak, german, ngerman, d
anish, esperanto, spanish, catalan, galician, estonian, finnish, french, greek,
 monogreek, ancientgreek, croatian, hungarian, interlingua, ibycus, indonesian,
 icelandic, italian, latin, mongolian, dutch, norsk, polish, portuguese, romani
an, russian, slovenian, uppersorbian, serbian, swedish, turkish, ukenglish, ukr
ainian, loaded.

! LaTeX Error: Missing \begin{document}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.5 @
     Article{yang_mills,
? q
OK, entering \batchmode...
Missing character: There is no @ in font nullfont!
Missing character: There is no A in font nullfont!
Missing character: There is no r in font nullfont!
Missing character: There is no t in font nullfont!
Missing character: There is no i in font nullfont!
Missing character: There is no c in font nullfont!
Missing character: There is no l in font nullfont!
Missing character: There is no e in font nullfont!
Missing character: There is no y in font nullfont!
Missing character: There is no a in font nullfont!
Missing character: There is no n in font nullfont!
Missing character: There is no g in font nullfont!
! Missing $ inserted.
<inserted text> 
                $
l.5 @Article{yang_
                  mills,
I've inserted a begin-math/end-math symbol since I think
you left one out. Proceed, with fingers crossed.

LaTeX Font Info:    External font `cmex10' loaded for size
(Font)              <7> on input line 5.
LaTeX Font Info:    External font `cmex10' loaded for size
(Font)              <5> on input line 5.
! Extra }, or forgotten $.
l.13 }
      
I've deleted a group-closing symbol because it seems to be
spurious, as in `$x}$'. But perhaps the } is legitimate and
you forgot something else, as in `\hbox{$x}'. In such cases
the way to recover is to insert both the forgotten and the
deleted material, e.g., by typing `I$}'.

)
! Emergency stop.
<*> bibliography.bib
                    
*** (job aborted, no legal \end found)

 
Here is how much of TeX's memory you used:
 7 strings out of 94087
 179 string characters out of 1167529
 48781 words of memory out of 3500000
 3389 multiletter control sequences out of 10000+50000
 3640 words of font info for 14 fonts, out of 1200000 for 2000
 645 hyphenation exceptions out of 8191
 18i,2n,12p,99b,58s stack positions out of 5000i,500n,6000p,200000b,5000s
No pages of output.
