KOBUS, Ryszard; KLIŚ , Paweł; GODLEWSKI, Paweł. Maintenance of Lead-acid Batteries Used in Telecommunications Systems. Journal of Telecommunications and Information Technology, Warsaw, Poland, v. 62, n. 4, p. 106–113, 2015. DOI: 10.26636/jtit.2015.4.993. Disponível em: https://www.jtit.pl/jtit/article/view/993. Acesso em: 4 aug. 2026.