TY - JOUR IS - 4 JA - J Biomed Eng JO - Journal of Biomedical Engineering PY - 1984 SN - 0141-5425 VL - 6 AU - Wahlstrom O AU - Knutsson H DO - 10.1016/0141-5425(84)90077-3 LA - en N1 - FEMU ID: 2988; EMF-Portal URL: https://www.emf-portal.org/en/article/2988 SP - 293-296 TI - A device for generation of electromagnetic fields of extremely low frequency ER -