SIVAKUMAR, Koratti Chengalrayan. A class of singular Ro-matrices and extensions to semidefinite linear complementarity problems. Yugoslav Journal of Operations Research, [S. l.], v. 23, n. 2, p. 163–172, 2013. DOI: 10.2298/YJOR130105027S. Disponível em: https://yujor.erc.fon.bg.ac.rs/index.php/yujor/article/view/357. Acesso em: 29 nov. 2025.