Cuiwei Li, Chongxun Zheng, and Changfeng Tai, " Detection of
ECG Characteristic points using Wavelet Transforms",IEEE Trans.
Biomed. Eng, Vol. 42, No. 1, 1995
 S. Z. Mahmoodabadi, A .Ahmadian , M. D.Abolhasani, M. Eslami, J. H.
Bidgoli, "ECG Feature Extraction Based on Multiresolution Wavelet
Transform," Proceedings of the 2005 IEEE, Engineering in Medicine
and Biology 27th Annual Conference Shanghai, China, September 1-4,
 S.C. Saxena, V. Kumar and S.T. Hande, "QRS Detection using New
Wavelets", Journal of Medical Engineering & Technology, Volume 26,
November1, pages 7-15, (2002)
 Robi Polikar,"The Wavelet Tutorial Part IV, Multiresolution Analysis:
The Discrete Wavelet Transform",
 Paul S addition, "Wavelet Transforms and the ECG: A Review,"
Institute of Physics Publishing, Physiol. Meas.26 (2005) R155-R199.
 C.S. Gargour and V. Ramachandran, "A Scheme for Teaching wavelets
at the introductory Level", Frontiers in Education Conference, 1997.
27th Annual Conference. 'Teaching and Learning in an Era of Change'.
Proceedings. Pittsburgh, PA, USA, 5-8 Nov 1997, http://fie.engrng.pitt.
 J.S.Sahambi, S.N. Tandon, R.K.P. Bhatt, "Using Wavelet Transforms
for ECG Characterization, An Online Digital Signal Processing
System", IEEE Engineering In Medicine & Biology, Jan/Feb, 1997
 Wills J.Tompkins, Biomedical Digital Signal Processing, Prentice Hall
of India, New Delhi. 1993, ISBN: 0-13-67216-5
 Romero Legarreta, PS Addition, N Grubb, GR Clegg, CE Robertson,
KAA Fox, JN Watson, "R-Wave Detection Using Continuous Wavelet
Modulus Maxima", Computers in Cardiology 2003, 30, 565-568 ,0276-
6547/03, IEEE 2003.