2005 · Gerhard Wabbena, Martin Schmitz, et al. · Proceedings of the Satellite Division's International Technical Meeting (Online)/Proceedings of the Satellite Division's International Technical Meeting (CD-ROM) · 263
1996 · Gerhard Wübbena, Andreas Bagge, et al. · Proceedings of the 9th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1996) · 170
2001 · Gerhard Wübbena, Andreas Bagge, et al. · Proceedings of the Satellite Division's International Technical Meeting (Online)/Proceedings of the Satellite Division's International Technical Meeting (CD-ROM) · 27
2001 · Gerhard Wübbena, Andreas Bagge, et al. · Proceedings of the Satellite Division's International Technical Meeting (Online)/Proceedings of the Satellite Division's International Technical Meeting (CD-ROM) · 7