Error parsing XML document

/mnt/stor/prosjekt/menota/public_html/internmappe/referat/RaadsReferat2007-08-31.page:57: parser error : Entity 'aelig' not defined
<p>                     Matthew J. Driscoll, (Den Arnamagn&aelig;anske Samling, 
                                                                 ^
/mnt/stor/prosjekt/menota/public_html/internmappe/referat/RaadsReferat2007-08-31.page:57: parser error : Entity 'oslash' not defined
               Matthew J. Driscoll, (Den Arnamagn&aelig;anske Samling, K&oslash;
                                                                               ^
/mnt/stor/prosjekt/menota/public_html/internmappe/referat/RaadsReferat2007-08-31.page:58: parser error : Entity 'eth' not defined
                        Gu&eth;var&eth;ur M&aacute;r Gunnlaugsson (Stofnun &Aacu
                               ^
/mnt/stor/prosjekt/menota/public_html/internmappe/referat/RaadsReferat2007-08-31.page:58: parser error : Entity 'eth' not defined
                        Gu&eth;var&eth;ur M&aacute;r Gunnlaugsson (Stofnun &Aacu
                                       ^
/mnt/stor/prosjekt/menota/public_html/internmappe/referat/RaadsReferat2007-08-31.page:58: parser error : Entity 'aacute' not defined
                        Gu&eth;var&eth;ur M&aacute;r Gunnlaugsson (Stofnun &Aacu
                                                   ^
/mnt/stor/prosjekt/menota/public_html/internmappe/referat/RaadsReferat2007-08-31.page:58: parser error : Entity 'Aacute' not defined
                     Gu&eth;var&eth;ur M&aacute;r Gunnlaugsson (Stofnun &Aacute;
                                                                               ^
/mnt/stor/prosjekt/menota/public_html/internmappe/referat/RaadsReferat2007-08-31.page:58: parser error : Entity 'uacute' not defined
     Gu&eth;var&eth;ur M&aacute;r Gunnlaugsson (Stofnun &Aacute;rna Magn&uacute;
                                                                               ^
/mnt/stor/prosjekt/menota/public_html/internmappe/referat/RaadsReferat2007-08-31.page:58: parser error : Entity 'aacute' not defined
ugsson (Stofnun &Aacute;rna Magn&uacute;ssonar í íslenskum fræðum, H&aacute;
                                                                               ^
/mnt/stor/prosjekt/menota/public_html/internmappe/referat/RaadsReferat2007-08-31.page:58: parser error : Entity 'oacute' not defined
ofnun &Aacute;rna Magn&uacute;ssonar í íslenskum fræðum, H&aacute;sk&oacute;
                                                                               ^
/mnt/stor/prosjekt/menota/public_html/internmappe/referat/RaadsReferat2007-08-31.page:58: parser error : Entity 'Iacute' not defined
te;rna Magn&uacute;ssonar í íslenskum fræðum, H&aacute;sk&oacute;li &Iacute;
                                                                               ^
/mnt/stor/prosjekt/menota/public_html/internmappe/referat/RaadsReferat2007-08-31.page:60: parser error : Entity 'oslash' not defined
			Ebba Hjort (Det danske Sprog- og Litteraturselskab, K&oslash;benhavn)<lb/>
			                                                             ^
/mnt/stor/prosjekt/menota/public_html/internmappe/referat/RaadsReferat2007-08-31.page:63: parser error : Entity 'oslash' not defined
			Merete J&oslash;rgensen (Det danske Sprog- og Litteraturselskab, K&oslash;ben
			                ^
/mnt/stor/prosjekt/menota/public_html/internmappe/referat/RaadsReferat2007-08-31.page:63: parser error : Entity 'oslash' not defined
			Merete J&oslash;rgensen (Det danske Sprog- og Litteraturselskab, K&oslash;ben
			                                                                          ^
/mnt/stor/prosjekt/menota/public_html/internmappe/referat/RaadsReferat2007-08-31.page:64: parser error : Entity 'aelig' not defined
                        Alex Speed Kjeldsen (Den Arnamagn&aelig;anske Samling, K
                                                                ^
/mnt/stor/prosjekt/menota/public_html/internmappe/referat/RaadsReferat2007-08-31.page:64: parser error : Entity 'oslash' not defined
                Alex Speed Kjeldsen (Den Arnamagn&aelig;anske Samling, K&oslash;
                                                                               ^
/mnt/stor/prosjekt/menota/public_html/internmappe/referat/RaadsReferat2007-08-31.page:65: parser error : Entity 'Aacute' not defined
                        Kristín Bjarnadóttir (Stofnun &Aacute;rna Magn&uacute;
                                                                ^
/mnt/stor/prosjekt/menota/public_html/internmappe/referat/RaadsReferat2007-08-31.page:65: parser error : Entity 'uacute' not defined
                        Kristín Bjarnadóttir (Stofnun &Aacute;rna Magn&uacute;
                                                                               ^
/mnt/stor/prosjekt/menota/public_html/internmappe/referat/RaadsReferat2007-08-31.page:65: parser error : Entity 'aacute' not defined
óttir (Stofnun &Aacute;rna Magn&uacute;ssonar í íslenskum fræðum, H&aacute;
                                                                               ^
/mnt/stor/prosjekt/menota/public_html/internmappe/referat/RaadsReferat2007-08-31.page:65: parser error : Entity 'oacute' not defined
ofnun &Aacute;rna Magn&uacute;ssonar í íslenskum fræðum, H&aacute;sk&oacute;
                                                                               ^
/mnt/stor/prosjekt/menota/public_html/internmappe/referat/RaadsReferat2007-08-31.page:65: parser error : Entity 'Iacute' not defined
te;rna Magn&uacute;ssonar í íslenskum fræðum, H&aacute;sk&oacute;li &Iacute;
                                                                               ^
/mnt/stor/prosjekt/menota/public_html/internmappe/referat/RaadsReferat2007-08-31.page:136: parser error : Entity 'eth' not defined
<p>Gu&eth;var&eth;ur M&aacute;r Gunnlaugsson orienterede om arbejdet ved Stofnun
          ^
/mnt/stor/prosjekt/menota/public_html/internmappe/referat/RaadsReferat2007-08-31.page:136: parser error : Entity 'eth' not defined
<p>Gu&eth;var&eth;ur M&aacute;r Gunnlaugsson orienterede om arbejdet ved Stofnun
                  ^
/mnt/stor/prosjekt/menota/public_html/internmappe/referat/RaadsReferat2007-08-31.page:136: parser error : Entity 'aacute' not defined
<p>Gu&eth;var&eth;ur M&aacute;r Gunnlaugsson orienterede om arbejdet ved Stofnun
                              ^
/mnt/stor/prosjekt/menota/public_html/internmappe/referat/RaadsReferat2007-08-31.page:169: parser error : Entity 'eth' not defined
s lagabœtirs landslag, Bjarkeyjarréttr, Farmannalög, réttarbœtr og Hir&eth;
                                                                               ^
 at /usr/lib/perl5/site_perl/Aksis/XSLTransformer/Application.pm line 154