Zeitschrift fur Vermessungswesen (ZfV, the Journal of the German Association of Surveying) volume 128 of April 2003 pages 244-250 and volume 129 of April 2004 pages 258-260.
Used in German state of Schleswig-Holstein.
See information source. The Cartesian offset to be applied is determined through interpolation within an irregular grid of points at which coordinates in both source and target coordinate reference systems are given. The interpolation uses a finite element method form function procedure. The interpolation uses a finite element method form function procedure described in the Information Source.