References
- Department of Health and Social Security. Hospital Technical Memorandum No. 8: Safety Code for Electro Medical Apparatus. H.M.S.O., London 1963, revised 1969
- Brown M. C., Ph D, Johnson F., Roddy T., McDonald T. An Instrument for Testing Electro-Medical Equipment for Safe Performance. Biomedical Engineering 1974; 1619(1)24–25