@article{Piskorski:2009,
author
=
"J.Piskorski and P.Guzik",
title
=
"Geometry of the Poincaré plot of RR intervals and its asymmetry in healthy adults",
journal
=
"Physiological Measurement",
volume
=
"Vol. 28",
pages
=
"287--300",
year
=
"2007",
}