JAFARI, Rad Nader. A note on the p - center problem. Yugoslav Journal of Operations Research, [S. l.], v. 21, n. 2, p. 199–204, 2011. DOI: 10.2298/YJOR1102199J. Disponível em: https://yujor.erc.fon.bg.ac.rs/index.php/yujor/article/view/314. Acesso em: 28 jul. 2025.