@article{Minina2014phase,
author={Minina, E.. and Faynzilberg, L..},
title={Phase Portrait of Single-Channel Ecg in Asseessment of Functional Reserves of Cardiovascular System},
journal={Journal of New Medical Technologies},
publisher={INFRA-M Academic Publishing LLC.},
year={2014},
pages={22-27},
volume={21},
issue={3},
}