1. Bayés de Luna A, Gausí Gené C, Soler Soler J, Fort de Ribot R, Llamas Lombardia A, Román Castillo M, Trilla Sánchez E: Electrocardiografía clinica (2 volumes). Edit Científico-Médica: Barcelona, 1977.
2. Cooksey JD, Dunn M, Massie E: Clinical vectorcardiography and electrocardiography. Year Book Medical Pubi: Chicago London, 1977.
3. Benchimol A: Vectorcardiography. Williams-Wilkins Co: Baltimore, 1973.
4. Chou T Ch, Helm RA, Kaplan S: Clinical vectorcardiography. Grunne and Stratton: New York, 1974.
5. Frank E: An accurate clinically practical system for spatial vectorcardiography. Circulation 13: 737, 1956.