@article{Żurek:2018,
  author  = "S. Żurek and W. Grabowski and M. Kośmider and S. Jurga and P. Guzik and J. Piskorski",
  title   = "Bootstrapping the empirical bounds on the variability of sample entropy in 24-hour ECG recordings for 1 hour segments",
  journal = "Journal of Applied Mathematics and Computational Mechanics",
  volume  = "Vol. 17",
  number  = "no. 2",
  pages   = "105--113",
  year    = "2018",
}