INVESTIGATION OF THE CONTRIBUTIONS OF SOUND SOURCES TO EXTERNAL TRAIN NOISE. Journal Akustika, [S. l.], v. 39, n. 39, 2025. DOI: 10.36336/epbsme91. Disponível em: https://journalakustika.com/index.php/akustika/article/view/34. Acesso em: 13 jun. 2025.