1. Distributions on sphere and on the projective plane;Bingham,1964
2. A series expansion for angular Gaussian distribution;Bingham,1983
3. Palaeomagnetism of Quaternary volcanics of the East-Eifel, Germany;Böhnel;J. Geophys.,1982
4. Paleomagnetic investigation of Quaternary West Eifel volcanics (Germany): indication for increased volcanic activity during geomagnetic excursion/event?;Böhnel;J. Geophys.,1987
5. Statistical paleomagnetic field modelling and dynamo numerical simulation;Bouligand;Geophys. J. Int.,2005