@book{id_13483,
author = "Doergé, Werner and Reinhart, Ewald and Boedecker, Gerd",
title = "Das International Gravity Standardization Net 1971 (IGSN 71) in der Bundesrepublik Deutschland",
year = "1977",
address = "München",
series = "DGK: Veröffentlichungen B: Angewandte Geodäsie",
volume = "225",
isbn = "3-7696-8527-X",
}