参考文献

[5] ISO 6707-1, Buildings and civil engineering works — Vocabulary — Part 1: General terms [src] [obp] [rss]
[21] JIS E 1001:2001, 鉄道―線路用語 [src] [pdf]
[22] OGC 21-006r2, Tatjana Kutzner, Carl Stephen Smyth, Claus Nagel, Volker Coors, Diego Vinasco-Alvarez, Nobuhiro Ishi. OGC City Geography Markup Language (CityGML) Part 2: GML Encoding Standard. Version 2. Open Geospatial Consortium. 入手先: http://www.opengis.net/doc/IS/CityGML-2/3.0.0 [src] [html]