32. 文献とWeb参照
GDAL-SOFTWARE-SUITE. Geospatial data abstraction library. https://gdal.org, 2013.
GRASS-PROJECT. 地理的資源分析支援システム (Geographic resource analysis support system) https://grass.osgeo.org, 2013.
NETELER, M., AND MITASOVA, H. オープンソースGIS グラス アプローチ (Open source gis: A grass gis approach, 2008)
OGR-SOFTWARE-SUITE. Geospatial data abstraction library. https://gdal.org, 2013.
OPEN-GEOSPATIAL-CONSORTIUM. Web map service (1.1.1) implementation specification. https://portal.ogc.org/files/?artifact_id=1081&version=1&format=pdf, 2002.
OPEN-GEOSPATIAL-CONSORTIUM. Web map service (1.3.0) implementation specification. https://portal.ogc.org/files/?artifact_id=14416&format=pdf, 2004.
POSTGIS-PROJECT. PostgreSQLの空間サポート。 http://www.refractions.net/products/postgis/, 2013.