Axel Rülke: Unification of European height system realizations. In: Journal of Geodetic Science 2012, Band 2, Heft 4, S. 343-354. ISSN2081-9943DOI:10.2478/v10156-011-0048-1
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Axel Rülke: Unification of European height system realizations. In: Journal of Geodetic Science 2012, Band 2, Heft 4, S. 343-354. ISSN2081-9943DOI:10.2478/v10156-011-0048-1