@article{YJOR_1992_2_2_a1,
     author = {Ellis L. Johnson and George L. Nemhauser},
     title = {Recent {Developments} and {Future} {Directions} in {Mathematical} {Programming}},
     journal = {Yugoslav journal of operations research},
     pages = {143 },
     publisher = {mathdoc},
     volume = {2},
     number = {2},
     year = {1992},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/YJOR_1992_2_2_a1/}
}