@misc{Fridl_P._Echocardiography_1983,
 author={Fridl, P. and Niederle, P. and Widimsky, J. and Riedel, M. and Jandova, R.},
 copyright={Rights Reserved - Free Access},
 journal={Prace IPPT IFTR REPORTS},
 address={Warszawa},
 howpublished={online},
 year={1983},
 publisher={Instytut Podstawowych Problemów Techniki Polskiej Akademii Nauk},
 language={eng},
 type={Text},
 title={Echocardiography in pulmonary hypertension},
 URL={http://www.rcin.org.pl/Content/6415/PDF/WA727_10110_57027-10-1983_Fridl-13.pdf},
 keywords={Ultradźwięki - zastosowanie w diagnostyce [KABA]},
}