KOWALCZYK, Stanisław. PDHdtjtd Systemy PDH ss: Sieci WAN nowa poprawka tstjsttj. DEMO, [S. l.], v. 12304, n. 130, p. 45–88, 2022. DOI: 10.21641/demo.v12304i130.69. Disponível em: https://ojs34.fimagis.pl/index.php/demo/article/view/69. Acesso em: 19 sep. 2024.