@book{id_13557,
author = "Klokočnik, Jaroslav",
title = "Covariance propagation for GEM-L2 and GRIM-3M1P to TOPEX and ERS-1 orbits",
year = "1989",
address = "München",
publisher = "Beck",
series = "DGK: Veröffentlichungen B: Angewandte Geodäsie",
volume = "289",
isbn = "3-7696-8574-1",
}