[1]
[CITE@en[ECS]]
<http://www.topologi.com/public/ECS.pdf>
([[名無しさん]])


[2]
[CITE[ECS - Moving from Well-Formed XML to Amply-Tagged XML - O'Reilly XML Blog]] ([[Rick Jelliffe]] 著, [TIME[2007-02-07 08:47:16 +09:00]] 版) <http://www.oreillynet.com/xml/blog/2007/02/ecs_moving_from_wellformed_xml.html>
([[名無しさん]])