1. Institute of Electrical and Electronics Engineers (IEEE). IEEE standard for safety levels with respect to human exposure to radio frequency electromagnetic fields, 3 kHz to 300 GHz (Standard No. C.95.1:2005). New York, NY, USA: IEEE; 2005.
2. Institute of Electrical and Electronics Engineers (IEEE). IEEE standard for safety levels with respect to human exposure to electromagnetic fields, 0–3 kHz (Standard No. C.95.6:2002). New York, NY, USA: IEEE; 2002.
3. Hansson Mild K, B. Greenebaum. Environmental and occupationally encountered electromagnetic fields. In: Barnes FS, Greenebaum B, editors. Handbook of biological effects of electromagnetic fields. 3rd ed. (Vol. 1. Bioengineering and biophysical aspects of electromagnetic fields). Boca Raton, FL, USA: CRC Press; p. 1–34.
4. Hietanen M, Hansson Mild K, Karpowicz J. Exposure to electromagnetic fields in the work environment and basic measurement problems. In: Kostarakis P, editor. Biological Effect of EMFs. 3rd International Workshop. Proceedings. University of Ioannina and NCSR Demokritos; 2004. p. 1174–80.
5. American Conference of Government Industrial Hygienist (ACGIH). Threshold limit values and biological exposure indices. Cincinnati, OH, USA: ACGIH; 2008.