A new paper has been published:
The article describes the latest version of val3dity (v2), our open-source software to validate 3D primitives according to the international standard ISO19107. Compared to previous version, it now supports all the 3D primitives of GML:
<gml:MultiSurface><gml:CompositeSurface><gml:Solid><gml:MultiSolid><gml:CompositeSolid>and the reporting of the errors has been greatly improved.