por Cook, William | Lovász, László | Vygen, Jens | SpringerLink (Servicio en linea).
por Dimacs Workshop On Polyhedral Combinatorics (1989 : Center For Discrete Mathematics And Theoretical Computer Science) | Cook, William J, 1936- [editor] | Seymour, Paul D [editor].
por Cook, William, 1957- [colaborador].