Hi,

I have a document and I get this error:

publications    : warning: cite argument riley-tesi unknown on 139
references      : unknown reference [][0]
section         : 1.4 Més d'una secció
section         : 1.5 $p_w$
section         : 1.6 altres
{vertical mode: \tracingstats}
{\tracingpages}
{\tracingoutput}
{\tracinglostchars}
{\tracingmacros}
{\tracingparagraphs}
{\tracingrestores}
{\showboxbreadth}
{\showboxdepth}
{\tracinggroups}
{\tracingifs}
{\tracingscantokens}
{\tracingnesting}
{\tracingassigns}
{into \tracingassigns=2}
{\errorstopmode}

{\tracingonline}
{changing \tracingonline=1}

Completed box being shipped out [33.33]
Memory usage before: 5614&778894; after: 919&777521; still untouched: 930938
title           : - Refer\dochar {232}ncies
[34.34]
title           : - Índex alfabètic
(./memoria.tuo
! Extra }, or forgotten $.
\doregistertexthowto ...?id #1\c!textcommand }{#2}
                                                  \dostopattributes
\dohandleregisterentry ...exthowto {\v!index }{#1}
                                                  \fi \egroup \!!doneafalse
\c!entryb ...ry {\v!index }{mitjan respecte de $k}
                                                  \global 
\firstregisterentr...
<argument> \c!entrya \c!entryb
                               \c!entryc \c!entryd
\secondoftwoarguments #1#2->#2
                             
\dodosetpageregisterpageA ...\c!entryc \c!entryd }
                                                  \global \let \c!entrya 
\re...
...
l.167 ...e{index}{,}{24}{2--0-1-3-0-0-0-0--32}{32}
                                                  %
? x
{/usr/share/texmf/fonts/enc/dvips/lm/lm-ec.enc}{/usr/share/texmf/fonts/enc/dvip
s/lm/lm-mathsy.enc}{/usr/share/texmf/fonts/enc/dvips/lm/lm-mathit.enc}{/usr/sha
re/texmf/fonts/enc/dvips/lm/lm-rm.enc}{/usr/share/texmf/fonts/enc/dvips/lm/lm-m
athex.enc}</usr/share/texmf/fonts/type1/public/lm/lmbx10.pfb></usr/share/texmf/
fonts/type1/public/lm/lmex10.pfb></usr/share/texmf/fonts/type1/public/lm/lmmi10
.pfb></usr/share/texmf/fonts/type1/public/lm/lmmi6.pfb></usr/share/texmf/fonts/
type1/public/lm/lmmi7.pfb></usr/share/texmf/fonts/type1/public/lm/lmmi8.pfb></u
sr/share/texmf/fonts/type1/public/lm/lmmi9.pfb></usr/share/texmf/fonts/type1/pu
blic/lm/lmr10.pfb></usr/share/texmf/fonts/type1/public/lm/lmr6.pfb></usr/share/
texmf/fonts/type1/public/lm/lmr7.pfb></usr/share/texmf/fonts/type1/public/lm/lm
r8.pfb></usr/share/texmf/fonts/type1/public/lm/lmr9.pfb></usr/share/texmf/fonts
/type1/public/lm/lmri10.pfb></usr/share/texmf/fonts/type1/public/lm/lmri9.pfb><
/usr/share/texmf/fonts/type1/public/lm/lmsy10.pfb></usr/share/texmf/fonts/type1
/public/lm/lmsy6.pfb></usr/share/texmf/fonts/type1/public/lm/lmsy7.pfb></usr/sh
are/texmf/fonts/type1/public/lm/lmsy8.pfb></usr/share/texmf/fonts/type1/public/
lm/lmsy9.pfb></usr/share/texmf/fonts/type1/public/lm/lmtt10.pfb></usr/share/tex
mf-texlive/fonts/type1/bluesky/ams/msam10.pfb></usr/share/texmf-texlive/fonts/t
ype1/bluesky/ams/msbm10.pfb>
Output written on memoria.pdf (34 pages, 424021 bytes).
Transcript written on memoria.log.
TeXExec | runtime: 18.095553
xan@rulot:~/Desktop/TFM/TFM/nou$



The problem appears after section \section{$\varphi_k$}, because if I 
put \stoptext after, all is ok. Anyone could see the problems? I attach 
the file. Please, help me.

Xan.