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@article{TUW-119442,
    author = {Gartner, Georg and Brunner-Friedrich, Beatrix},
    title = {Active Landmarks zur Unterst{\"u}tzung von Fu{\ss}g{\"a}ngernavigationssystemen},
    journal = {Geonews, Software-Magazin f{\"u}r Vermessung und Geoinformation},
    year = {2003},
    volume = {3},
    pages = {12--13}
}