For citations:
Repina E.S., Yuriev S.Yu., Kosteley Ya.V., Zimina N.D. Evaluation of the effectiveness of fetal heart rate analysis using phonocardiography with novel mathematical methods of audiogram processing. Fundamental and Clinical Medicine. 2025;10(3):47-60. (In Russ.) https://doi.org/10.23946/2500-0764-2025-10-3-47-60