@book{id_13219,
author = "Lelgemann, Dieter and Marchenko, Alexander",
title = "On concepts for modeling the Earth's gravity field",
year = "2001",
address = "München",
publisher = "Verl. der Bayer. Akad. der Wiss. [u.a.]",
series = "DGK: Veröffentlichungen A: Theoretische Geodäsie",
volume = "117",
isbn = "3-7696-8197-5",
}