[2] ([TIME[2017-01-10 14:01:06 +09:00]]) <https://www.iana.org/assignments/media-types/application/gml+xml>

[1] [CITE@en[Geography Markup Language - Wikipedia, the free encyclopedia]] ([TIME[2016-10-01 17:13:22 +09:00]]) <https://en.wikipedia.org/wiki/Geography_Markup_Language>

[3] [CITE@en[Geography Markup Language | [[OGC]]]] ([TIME[2019-06-09 15:18:17 +09:00]]) <http://www.opengeospatial.org/standards/gml>

[4] [[ISO 19136]]