WASET
	@article{(Open Science Index):https://publications.waset.org/pdf/2279,
	  title     = {Recent Trends in Nonlinear Methods of HRV Analysis: A Review},
	  author    = {Ramesh K. Sunkaria},
	  country	= {},
	  institution	= {},
	  abstract     = {The linear methods of heart rate variability analysis
such as non-parametric (e.g. fast Fourier transform analysis) and
parametric methods (e.g. autoregressive modeling) has become an
established non-invasive tool for marking the cardiac health, but their
sensitivity and specificity were found to be lower than expected with
positive predictive value },
	    journal   = {International Journal of Biomedical and Biological Engineering},
	  volume    = {5},
	  number    = {3},
	  year      = {2011},
	  pages     = {104 - 109},
	  ee        = {https://publications.waset.org/pdf/2279},
	  url   	= {https://publications.waset.org/vol/51},
	  bibsource = {https://publications.waset.org/},
	  issn  	= {eISSN: 1307-6892},
	  publisher = {World Academy of Science, Engineering and Technology},
	  index 	= {Open Science Index 51, 2011},
	}