Brohet, C., Robert, A., Derwael, C., Fesler, R., Stijns, M., Vliers, A., & Braasseur, LA. (1984). Computer Interpretation of Pediatric Orthogonal Electrocardiograms - Statistical and Deterministic Classification Methods. Circulation, 70(2), 255-263. https://hdl.handle.net/2078.5/49439 (Original work published 1984)