@book{id_13211,
author = "Heck, Bernhard and Seitz, Kurt",
title = "Effects of non-linearity in the geodetic boundary value problems",
year = "1993",
address = "München",
publisher = "Beck",
series = "DGK: Veröffentlichungen A: Theoretische Geodäsie",
volume = "109",
isbn = "3-7696-8191-6",
}