@article{DCG_1991__6_4_131157,
     author = {L.R. Nackman and V. Srinivasan},
     title = {Bisectors of {Linearly} {Separable} {Sets.}},
     journal = {Discrete & computational geometry},
     pages = {263--276},
     publisher = {mathdoc},
     volume = {6},
     number = {4},
     year = {1991},
     zbl = {0716.68087},
     url = {http://geodesic.mathdoc.fr/item/DCG_1991__6_4_131157/}
}