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.