Error parsing XML document

/mnt/stor/prosjekt/menota/public_html/raad/raad2007-2009.page:59: parser error : Entity 'aring' not defined
<head>R&aring;d for Medieval Nordic Text Archive (Menota)</head>
              ^
/mnt/stor/prosjekt/menota/public_html/raad/raad2007-2009.page:61: parser error : Entity 'aring' not defined
<p>De deltagende institusjonenen har oppnevnt dette r&aring;det for tre&aring;rs
                                                            ^
/mnt/stor/prosjekt/menota/public_html/raad/raad2007-2009.page:61: parser error : Entity 'aring' not defined
<p>De deltagende institusjonenen har oppnevnt dette r&aring;det for tre&aring;rs
                                                                              ^
/mnt/stor/prosjekt/menota/public_html/raad/raad2007-2009.page:62: parser error : Entity 'nbsp' not defined
<p>&nbsp;</p>
         ^
/mnt/stor/prosjekt/menota/public_html/raad/raad2007-2009.page:69: parser error : Entity 'aelig' not defined
<head>Den Arnamagn&aelig;anske Samling, K&oslash;benhavns universitet</head>    
                         ^
/mnt/stor/prosjekt/menota/public_html/raad/raad2007-2009.page:69: parser error : Entity 'oslash' not defined
<head>Den Arnamagn&aelig;anske Samling, K&oslash;benhavns universitet</head>    
                                                 ^
/mnt/stor/prosjekt/menota/public_html/raad/raad2007-2009.page:75: parser error : Entity 'oslash' not defined
<head>Ordbog over det norr&oslash;ne prosasprog, K&oslash;benhavns universitet</
                                  ^
/mnt/stor/prosjekt/menota/public_html/raad/raad2007-2009.page:75: parser error : Entity 'oslash' not defined
<head>Ordbog over det norr&oslash;ne prosasprog, K&oslash;benhavns universitet</
                                                          ^
/mnt/stor/prosjekt/menota/public_html/raad/raad2007-2009.page:81: parser error : Entity 'oslash' not defined
<head>Institut for nordisk filologi, K&oslash;benhavns universitet</head>
                                              ^
/mnt/stor/prosjekt/menota/public_html/raad/raad2007-2009.page:87: parser error : Entity 'oslash' not defined
<head>Det Danske Sprog- og Litteraturselskab, K&oslash;benhavn</head>
                                                       ^
/mnt/stor/prosjekt/menota/public_html/raad/raad2007-2009.page:88: parser error : Entity 'oslash' not defined
<list><item>Merete K. J&oslash;rgensen (fast representant)</item>
                               ^
/mnt/stor/prosjekt/menota/public_html/raad/raad2007-2009.page:98: parser error : Entity 'Aacute' not defined
<head>Stofnun &Aacute;rna Magn&uacute;ssonar &iacute; &iacute;slenskum fr&aelig;
                      ^
/mnt/stor/prosjekt/menota/public_html/raad/raad2007-2009.page:98: parser error : Entity 'uacute' not defined
<head>Stofnun &Aacute;rna Magn&uacute;ssonar &iacute; &iacute;slenskum fr&aelig;
                                      ^
/mnt/stor/prosjekt/menota/public_html/raad/raad2007-2009.page:98: parser error : Entity 'iacute' not defined
<head>Stofnun &Aacute;rna Magn&uacute;ssonar &iacute; &iacute;slenskum fr&aelig;
                                                     ^
/mnt/stor/prosjekt/menota/public_html/raad/raad2007-2009.page:98: parser error : Entity 'iacute' not defined
<head>Stofnun &Aacute;rna Magn&uacute;ssonar &iacute; &iacute;slenskum fr&aelig;
                                                              ^
/mnt/stor/prosjekt/menota/public_html/raad/raad2007-2009.page:98: parser error : Entity 'aelig' not defined
<head>Stofnun &Aacute;rna Magn&uacute;ssonar &iacute; &iacute;slenskum fr&aelig;
                                                                               ^
/mnt/stor/prosjekt/menota/public_html/raad/raad2007-2009.page:98: parser error : Entity 'eth' not defined
>Stofnun &Aacute;rna Magn&uacute;ssonar &iacute; &iacute;slenskum fr&aelig;&eth;
                                                                               ^
/mnt/stor/prosjekt/menota/public_html/raad/raad2007-2009.page:98: parser error : Entity 'iacute' not defined
a Magn&uacute;ssonar &iacute; &iacute;slenskum fr&aelig;&eth;um, Reykjav&iacute;
                                                                               ^
/mnt/stor/prosjekt/menota/public_html/raad/raad2007-2009.page:99: parser error : Entity 'eth' not defined
<list><item>Gu&eth;var&eth;ur M&aacute;r Gunnlaugsson (fast representant)</item>
                   ^
/mnt/stor/prosjekt/menota/public_html/raad/raad2007-2009.page:99: parser error : Entity 'eth' not defined
<list><item>Gu&eth;var&eth;ur M&aacute;r Gunnlaugsson (fast representant)</item>
                           ^
/mnt/stor/prosjekt/menota/public_html/raad/raad2007-2009.page:99: parser error : Entity 'aacute' not defined
<list><item>Gu&eth;var&eth;ur M&aacute;r Gunnlaugsson (fast representant)</item>
                                       ^
/mnt/stor/prosjekt/menota/public_html/raad/raad2007-2009.page:100: parser error : Entity 'iacute' not defined
<item>Krist&iacute;n Bjarnad&oacute;ttir (suppleant)</item></list>
                   ^
/mnt/stor/prosjekt/menota/public_html/raad/raad2007-2009.page:100: parser error : Entity 'oacute' not defined
<item>Krist&iacute;n Bjarnad&oacute;ttir (suppleant)</item></list>
                                    ^
/mnt/stor/prosjekt/menota/public_html/raad/raad2007-2009.page:112: parser error : Entity 'oslash' not defined
<item>Jon Gunnar J&oslash;rgensen (suppleant)</item></list>
                          ^
/mnt/stor/prosjekt/menota/public_html/raad/raad2007-2009.page:116: parser error : Entity 'aelig' not defined
<head>Institutt for lingvistiske, litter&aelig;re og estetiske studier, Universi
                                               ^
/mnt/stor/prosjekt/menota/public_html/raad/raad2007-2009.page:118: parser error : Entity 'oslash' not defined
<item>Rune Kyrkjeb&oslash; (suppleant)</item></list>
                          ^
/mnt/stor/prosjekt/menota/public_html/raad/raad2007-2009.page:141: parser error : Entity 'aring' not defined
<head>Spr&aring;kbanken, G&oslash;teborgs universitet</head>
                ^
/mnt/stor/prosjekt/menota/public_html/raad/raad2007-2009.page:141: parser error : Entity 'oslash' not defined
<head>Spr&aring;kbanken, G&oslash;teborgs universitet</head>
                                  ^
/mnt/stor/prosjekt/menota/public_html/raad/raad2007-2009.page:146: parser error : Entity 'auml' not defined
<head>Svenska fornskrifts&auml;llskapet</head>
                               ^
/mnt/stor/prosjekt/menota/public_html/raad/raad2007-2009.page:148: parser error : Entity 'eacute' not defined
<item>Sture All&eacute;n (suppleant)</item></list>
                       ^
/mnt/stor/prosjekt/menota/public_html/raad/raad2007-2009.page:164: parser error : Entity 'ouml' not defined
<head>Institutionen f&ouml;r humaniora, V&auml;xj&ouml; universitet</head>
                           ^
/mnt/stor/prosjekt/menota/public_html/raad/raad2007-2009.page:164: parser error : Entity 'auml' not defined
<head>Institutionen f&ouml;r humaniora, V&auml;xj&ouml; universitet</head>
                                               ^
/mnt/stor/prosjekt/menota/public_html/raad/raad2007-2009.page:164: parser error : Entity 'ouml' not defined
<head>Institutionen f&ouml;r humaniora, V&auml;xj&ouml; universitet</head>
                                                       ^
/mnt/stor/prosjekt/menota/public_html/raad/raad2007-2009.page:175: parser error : Entity 'nbsp' not defined
<p>&nbsp;</p>
         ^
 at /usr/lib/perl5/site_perl/Aksis/XSLTransformer/Application.pm line 154