@book{id_12975,
author = "Gruber, T. and Gerlach, C. and Haagmans, R.",
title = "Intercontinental Height Datum Connection with GOCE and GPS-Levelling Data",
year = "2012",
series = "Journal of Geodetic Science",
volume = "2, 4",
url = "https://doi.org/10.2478/v10156-012-0001-y",
}