1. Improvement of the properties of an eddy current magnetic shield with active compensation;Malmivuo;J. Phys. E: Sci. Instrum.,1987
2. US Environmental Protection Agency, EMF In Your Environment. Magnetic Field Measurement of Everyday Electrical Devices, US Printing Office, Washington D.C., 1992.
3. W.R. Benett Jr., Health and Low Frequency Electromagnetic Fields, Yale University, 1994.
4. Design of a room-size magnetic shield;Patton;J. Geophys. Res.,1962
5. Improvement of the performance of a Mu metal magnetically shielded room by means of active compensation;ter Brake;Meas. Sci. Technol.,1991