[1] ISO/TC 211 Geographic information/Geomatics - Wikipedia (2017-01-30 20:38:57 +09:00) https://en.wikipedia.org/wiki/ISO/TC_211_Geographic_information/Geomatics

[2] (2019-07-01 00:01:27 +09:00) https://www.gsi.go.jp/common/000077857.pdf

[3] (2019-07-01 00:01:27 +09:00) https://www.gsi.go.jp/common/000077857.pdf