Error parsing XML document

http://www.google.com/:1: parser error : Content error in the external subset
<!doctype html><html itemscope="" itemtype="http://schema.org/WebPage" lang="no"
^
http://www.google.com/:1: parser error : Content error in the external subset
<!doctype html><html itemscope="" itemtype="http://schema.org/WebPage" lang="no"
^
/prosjekt/wab/public_html/wab_daad.page:62: parser error : Entity 'aring' not defined
the <xref url="http://www.forskningsradet.no/" type="notlist">Forskningsr&aring;
                                                                                ^