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- [44] DISCRIMINATION OF 2ND HEART SOUND IN VENTRICULAR SEPTUM DEFECT ARCHIV FUR KREISLAUFFORSCHUNG, 1968, 57 (3-4): : 217 - +
- [49] 2ND SOUND IN FERROELECTRICS ZHURNAL EKSPERIMENTALNOI I TEORETICHESKOI FIZIKI, 1988, 94 (01): : 370 - 381