Even Induced Cycles in Planar Graphs. - Oscar Porto (LATIN, 1992)

A generalization of simplicial elimination orderings. - Frédéric Maffray; Oscar Porto; Myriam Preissmann (J. Graph Theory, 1996)

Path parity and perfection. - Hazel Everett; Celina M. H. de Figueiredo; Cláudia Linhares Sales; Frédéric Maffray; Oscar Porto; Bruce A. Reed (Discret. Math., 1997)

On the structure of bull-free perfect graphs. - Celina M. H. de Figueiredo; Frédéric Maffray; Oscar Porto (Graphs Comb., 1997)

On the Consecutive Ones Property. - Joao Meidanis; Oscar Porto; Guilherme P. Telles (Discret. Appl. Math., 1998)

On the Structure of Bull-Free Perfect Graphs, 2: the Weakly Chordal Case. - Celina M. H. de Figueiredo; Frédéric Maffray; Oscar Porto (Graphs Comb., 2001)

Solving the Freight Car Flow Problem to Optimality. - Ricardo Fukasawa; Marcus Poggi de Aragão; Oscar Porto; Eduardo Uchoa (ATMOS, 2002)

Solving Steiner Tree Problems in Graphs with Lagrangian Relaxation. - Laura Bahiense; Francisco Barahona; Oscar Porto (J. Comb. Optim., 2003)

Optimizing Helicopter Transport of Oil Rig Crews at Petrobras. - Fernanda Menezes; Oscar Porto; Marcelo L. Reis; Lorenza Moreno; Marcus Poggi de Aragão; Eduardo Uchoa; Hernán G. Abeledo; Nelci Carvalho do Nascimento (Interfaces, 2010)