KRISIŪNIENĖ, A.; BATKAUSKAS, V. Accounting and Billing in GPRS Data Network. Elektronika ir Elektrotechnika, [S. l.], v. 58, n. 2, 2005. Disponível em: https://eejournal.ktu.lt/index.php/elt/article/view/10355. Acesso em: 7 may. 2024.