LEJKOWSKI, Wojciech; DOBROWOLSKI, Andrzej Piotr; OLSZEWSKI , Robert. An innovative method for diagnosing selected cardiac pathologies based on time-frequency analysis of phonocardiographic signals. Metrology and Measurement Systems, [S. l.], v. 33, n. 2, p. 1–17, 2026. DOI: 10.24425/mms.2026.3083. Disponível em: https://wydawnictwo.pan.pl/index.php/mms/article/view/3083. Acesso em: 15 oct. 2026.