[1] [CITE@en[Associating Schemas with XML documents 1.0 (First Edition)]]
([TIME[2010-04-17 05:32:14 +09:00]] 版)
<http://www.w3.org/TR/2010/NOTE-xml-model-20100415/>

[2] [CITE@en[Associating Schemas with XML documents 1.0 (First Edition)]]
([TIME[2010-04-17 01:20:22 +09:00]] 版)
<http://www.w3.org/XML/2010/04/xml-model/>

[3] [CITE@en[Associating Schemas with XML documents 1.0 (Second Edition)]]
( ([TIME[2011-08-09 01:02:47 +09:00]] 版))
<http://www.w3.org/TR/2011/NOTE-xml-model-20110811/>

[4] [CITE@en[Associating Schemas with XML documents 1.0 (Third Edition)]]
( ([TIME[2012-10-09 03:50:06 +09:00]] 版))
<http://www.w3.org/TR/2012/NOTE-xml-model-20121009/>

[5] [CITE@en[Associating Schemas with XML documents 1.0 (Third Edition)]]
( ([TIME[2012-11-14 16:58:41 +09:00]] 版))
<http://www.w3.org/TR/xml-model/>