@book{id_13493,
author = "Wenzel, Hans-Georg",
title = "Gravimetric vertical deflection determination for the North Sea region",
year = "1978",
address = "München",
publisher = "Beck",
series = "DGK: Veröffentlichungen B: Angewandte Geodäsie",
volume = "235.",
isbn = "3-7696-8533-4",
}