1. IEC 60601-2-51, Medical electrical equipment - Part 2-51: Particular requirements for safety, including essential performance, of recording and analyzing single channel and multichannel electrocardiographs, 2003.
2. Medical instrumentation, application and design;Webster,1992
3. 60-Hz interference in electrocardiography;Huhta;IEEE Trans,1973
4. Random data;Bendat,1986
5. Biomedical digital signal processing;Tompkins,1992