1. Magnetic signals from the core of the Earth and secular variations;Alldredge;J. Geophys. Res.,1981
2. Geomagnetic models and the solar cycle effect;Alldredge;Rev. of Geophys. and Space Sci.,1982
3. Varying geomagnetic anomalies and secular variation;Alldredge;J. Geophys. Res,1982
4. Core and crustal geomagnetic fields;Alldredge,1982
5. Long term and recent secular variation of the geomagnetic dipole moment;Alldredge;J. Geomag. Geoelectr.,1982