[4]
A generalized assignment problem with special ordered sets: a polyhedral approach[J] . I.R. de Farias, Jr.,E.L. Johnson,G.L. Nemhauser.Mathematical Programming . 2000 (1)
[4]
A generalized assignment problem with special ordered sets: a polyhedral approach[J] . I.R. de Farias, Jr.,E.L. Johnson,G.L. Nemhauser.Mathematical Programming . 2000 (1)