E. Litvak, et al., " Health consequences of exposure to electromagnetic fields in the frequency range 300 Hz to 10 MHz, " . Bioelectromagnetics 23 pp 68-82. 2002.
International Commision on Non-Ionizing Radiation Protection, "Guidelines for Limiting Exposure to time-Varying Electric and Magnetic Fields (1Hz -100kHz) ," Health Phys., 74(6), pp.818-836, 2010.
" Extremely Low Frequency Fields," , Environmental Health Criteria Monograph, No.238.
Dawson.B.V, et al., " Evaluaton of potential health effects of 10kHz magnetic fields, " , Bioelectromagnetics 19(3) pp.162-171, 1998.