@book{id_13225, author = "Zeilhofer, Claudia", title = "Multi-dimensional B-spline modeling of spatio-temporal ionospheric signals", year = "2008", address = "München", publisher = "Beck", series = "DGK: Veröffentlichungen A: Theoretische Geodäsie", volume = "Reihe A, Theoretische Geodäsie ; 123", url = "http://publikationen.badw.de/de/023372059", }