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3. Rocks of the anorthosite kindred in Vossestrand (Norway);Hödal;Nor. Geol. Tidsskr.,1945
4. Palaeomagnetism of metamorphic rocks: errors owing to intrinsic anisotropy;Irving;Geophys. J. R. Astron. Soc.,1973
5. The prospects of the RbSr and the UPb methods for an advanced geochronological investigation of the Precambrian of southern Norway;Michot;Nor. Geol. Unders.,1969