@article{RD-84,
 author = "DeBoer, R. W. and Karemaker, J. M. and Strackee, J.",
 title = "Spectrum of a series of point events, generated by the integral
	 pulse frequency modulation model",
 journal = "Med Biol Eng Comput",
 year = 1985,
 volume = 23,
 pages = "138-142"}

@article{RB-86,
 author = "Berger, R. D. and Akselrod, S. and Gordon, D. and Cohen, R. J.",
 title = "An efficient algorithm for spectral analysis of heart rate
	variability",
 journal = "IEEE Trans Biomed Eng",
 year = 1986,
 volume = "BME-33",
 pages = "900-904"}

@inproceedings{GM-92,
 author = "Moody, G. B.",
 title = "{ECG}-based indices of physical activity",
 booktitle = "Computers in Cardiology 1992",
 address = "Los Alamitos",
 publisher ="IEEE Computer Society Press",
 year = 1992,
 pages = "403-406"}

@inproceedings{PA-88,
 author = "Albrecht, P. and Cohen, R. J.",
 title = "Estimation of heart rate power spectrum bands from real-world data:
	 dealing with ectopic beats and noisy data",
 booktitle = "Computers in Cardiology 1988",
 address = "Los Alamitos",
 publisher = "IEEE Computer Society Press",
 year = 1989,
 pages = "311-314"}

@inproceedings{CB-91,
 author = "Birkett, C. L. and Kienzle, M. G. and Myers, G. A.",
 title = "Interpolation over ectopic beats increases low frequency power
	 in heart rate variability spectra",
 booktitle = "Computers in Cardiology 1991",
 address = "Los Alamitos",
 publisher = "IEEE Computer Society Press",
 year = 1992,
 pages = "257-259"}

@article{RK-87,
 author = "Klieger, R. E. and Miller, J. P. and Bigger, J. T. and Moss, A. J.
	and {and the Multicenter Post-Infarct Research Group}",
 title = "Decreased heart rate variability and its association with increased
	 mortality after acute myocardial infarction",
 journal = "Am J Cardiol",
 year = 1987,
 volume = 59,
 pages = "256-263"}

@article{NL-76,
 author = "Lomb, N. R.",
 title = "Least-squares frequency analysis of unequally spaced data",
 journal = "Astrophysics and Space Science",
 year = 1976,
 volume = 39,
 pages = "447--462"}

@incollection{RJ-81,
 author = "Jones, R. H.",
 title = "Fitting a continuous-time autoregression to unevenly sampled
	 discrete data",
 editor = "Findley, D. F.",
 booktitle = "Applied Time Series Analysis II",
 address = "New York",
 publisher = "Academic Press",
 pages = "1981"}  # page numbers are missing -- this is the year.
		  # encoding it this way avoids a bogus semicolon after 1981

@article{RB-92,
 author = "Burr, R. L. and Cowan, M. J.",
 title = "Autoregressive spectral models of heart rate variability",
 journal = "J Electrocardiology",
 year = 1992,
 volume = "25(Suppl.)",
 pages = "224-233"}

@article{WP-89,
 author = "Press, W. H. and Rybicki, G. B.",
 title = "Fast algorithm for spectral analysis of unevenly sampled data",
 journal = "Astrophysical J",
 year = 1989,
 volume = 338,
 pages = "277-280"}

@book{NR-92,
 author = "Press, W. H. and Teukolsky, S. A. and Vetterling, W. T. and
	 Flannery, B. P.",
 title = "Numerical Recipes in C: the Art of Scientific Computing",
 edition = "Second",
 note = "549--558 [FT], 572--575 [AR], 575--584 [Lomb]",
 publisher = "Cambridge Univ Press",
 year = 1992}

@inproceedings{GM-85,
 author = "Moody, G. B. and Mark, R. G. and Zoccola, A. and Mantero, S.",
 title = "Derivation of respiratory signals from multi-lead {ECG}s",
 booktitle = "Computers in Cardiology 1985",
 address = "Los Alamitos",
 publisher = "IEEE Computer Society Press",
 year = 1986,
 pages = "113-116"}