W3C XML Recommendation – http://www.w3.org/TR/REC-xml W3C DTD Recommendation – http://www.w3.org/TR/REC-xml#dt-doctype W3C XML Schema Recommendation – http://www.w3.org/XML/Schema#dev W3C XML-Data Note – http://www.w3.org/TR/1998/NOTE-XML-data-0105/
W3C XML Recommendation – http://www.w3.org/TR/REC-xml W3C DTD Recommendation – http://www.w3.org/TR/REC-xml#dt-doctype W3C XML Schema Recommendation – http://www.w3.org/XML/Schema#dev W3C XML-Data Note – http://www.w3.org/TR/1998/NOTE-XML-data-0105/