TY - RPRT TI - The conceptual schema in geospatial data standard design with application to GroundWaterML2 AU - Boyan Brodaric AU - Eric Boisvert AU - Peter Dahlhaus AU - Sylvain Grellet AU - Alexander Kmoch AU - Francois Letourneau AU - Jessica Lucido AU - Bruce Simons AU - Bernhard Wagner PY - 2018 DO - 10.1186/s40965-018-0058-3 UR - https://pubs.usgs.gov/publication/70202732 ID - 70202732 ER -