@article{DCG_1989__4_6_131060,
     author = {C. Bajaj and Ming Li},
     title = {Geometric {Optimization} and {Dp-Completeness.}},
     journal = {Discrete & computational geometry},
     pages = {3--14},
     publisher = {mathdoc},
     volume = {4},
     number = {6},
     year = {1989},
     zbl = {0651.68055},
     url = {http://geodesic.mathdoc.fr/item/DCG_1989__4_6_131060/}
}