1. Campbell, W. H., Introduction to Geomagnetic Fields, 290 pp., Cambridge Univ. Press, 1997.
2. Carslaw, H. S. and J. C. Jaeger, Conduction of heat in solids, 66 pp., Oxford Press, 1959.
3. Dampney, C. N. G., The equivalent source technique, Geophysics, 34, 39–53, 1969.
4. Davis, P. M., D. D. Jackson, C. A. Searls, and R. L. McPherron, Detection of tectonomagnetic events using multichannel predictive filtering, J. Geophys. Res., 86, 1731–1737, 1981.
5. Del Negro, C., F. Ferrucci, and R. Napoli, Retrieval of large volcanomagnetic effects observed during the 1981 eruption of Mt. Etna, Annali di Geofisica, 40, 547–562, 1997.