@book{id_13568, author = "Grafarend, Erik W.", title = "National report of the Federal Republic of Germany on the geodetic activities in the years 1991 - 1995", year = "1995", address = "München", publisher = "Beck", series = "DGK: Veröffentlichungen B: Angewandte Geodäsie", volume = "Reihe B, Angewandte Geodäsie ; 300", isbn = "3-7696-8583-0", }