@Book{Zeilhofer2008, author = "Zeilhofer, Claudia", title = "Multi-dimensional B-spline modeling of spatio-temporal ionospheric signals", year = "2008", address = "München", series = "DGK: A (Theoretische Geodäsie)", volume = "Reihe A, Theoretische Geodäsie ; 123", url = "https://publikationen.badw.de/de/023372059", }