The edge-weighted clique problem: Valid inequalities, facets and polyhedral computations. - Elder Magalhães Macambira; Cid Carvalho de Souza (Eur. J. Oper. Res., 2000)

An Application of Tabu Search Heuristic for the Maximum Edge-Weighted Subgraph Problem. - Elder M. Macambira (Ann. Oper. Res., 2002)

GRASP with Path-Relinking for the SONET Ring Assignment Problem. - Lucas de O. Bastos; Luiz Satoru Ochi; Elder M. Macambira (HIS, 2005)

A note on characterizing canonical cuts using geometry. - Elder M. Macambira; Nelson Maculan; Cid C. de Souza (Int. Trans. Oper. Res., 2005)

An Efficient Heuristic for the Ring Star Problem. - Thayse Christine S. Dias; Gilberto Farias de Sousa Filho; Elder M. Macambira; Lucídio dos Anjos F. Cabral; Marcia Helena Costa Fampa (WEA, 2006)

A column generation approach for SONET ring assignment. - Elder M. Macambira; Nelson Maculan; Cid C. de Souza (Networks, 2006)