1. Upton MT, DG Gibson, DJ Brown: Instantaneous mitral valve leaflet velocity and its relation to left ventricular wall movement in normal subjects. 38:51, 1976.
2. Van Zwieten G, JA Vogel, AHA Bom, H Rijsterborgh: Computer assisted analysis of M-mode echocardiograms. Proc. “Computers in Cardiology”, 1977.
3. Brower RW, WC van Dorp, JA Vogel, JR Roelandt: An improved method for the quantitative analysis of M-mode echocardiograms. European J Cardiol 313:171, 1975.
4. Teichholz Louis E, Gray R, Caputo, Jose Meller, Norman Kashdan, Diane LeBlanc, Michael v. Herman: Computer-assisted interactive interpretation of clinical echocardiograms. Computers in Cardiology 1977, IEEE Cat. no. 77CH 1254-2C.
5. Pai AG, NS Cahill, BA Dubroff, HA Fozzard, HC Brooks: Digital computer analysis of M-scan echocardiograms. J Clinical Ultrasound 4:173, 1976.