DOBROVOLSKIS, F. The New National Telephone Numbering Plan of Lithuania: its Implementation and Future Perspectives. Elektronika ir Elektrotechnika, [S. l.], v. 47, n. 5, 2003. DOI: 10.5755/j02.eie.11274. Disponível em: https://eejournal.ktu.lt/index.php/elt/article/view/11274.. Acesso em: 25 may. 2026.