@article{Guzik:2010,
  author  = "P. Guzik and J. Piskorski and P. Contreras and E. Migliaro",
  title   = "Asymmetrical properties of heart rate variability in type 1 diabetes",
  journal = "Clinical Autonomic Research",
  volume  = "Vol. 20",
  number  = "no 4",
  pages   = "255--257",
  year    = "2010",
}