@book{id_13128,
author = "Ramsayer, Karl",
title = "Genauigkeitsuntersuchungen der Schwerereduktion von Nivellements",
year = "1959",
address = "München",
publisher = "Beck [u.a.]",
series = "DGK: Veröffentlichungen A: Theoretische Geodäsie",
volume = "31",
}