1. Case study of neural network interpretation of airborne electromagnetic measurements;Ahl,1999
2. Beard, L.P., Elvebakk, H., 1999. Geophysical investigations: Krokskogen, Oppkuven, and Gran, 1998. Geological Survey of Norway Report 99.027, 32 pp.
3. Simultaneous inversion of airborne electromagnetic data for resistivity and magnetic permeability;Beard;Geophysics,1998
4. Beard, L.P., Rønning, S., 1997. Data acquisition and processing report—helicopter survey, Krokskogen. Geological Survey of Norway Report 97.134, 9 pp.
5. Beard, L.P., Lutro, O., Nordgulen, Ø., Siedlecka, A., 1997. Geological and geophysical investigations at Ringerike and Krokskogen (in Norwegian). Geological Survey of Norway Report 97.153, 22 pp.