@book{id_13501,
author = "Sigl, Rudolf",
title = "Continental networks",
year = "1979",
address = "München",
publisher = "Beck",
series = "DGK: Veröffentlichungen B: Angewandte Geodäsie",
volume = "Reihe B, Angewandte Geodäsie ; 243",
isbn = "3-7696-8536-9",
}