Echocardiography of ruptured aortic valvular leaflet.P Niederle, I Beránek, E Rehulová et al.|PubMed|1980Cited by 1
[Echocardiographic evaluation of the function of the Björk-Shiley valve prosthesis].E Koudelková, L Hejhal, P Niederle et al.|PubMed|1979Cited by 0
[Echocardiography in aortic valve cusp rupture (author's transl)].P Niederle, I Beránek, M Gebauerová et al.|PubMed|1979Cited by 0