@article{DCG_1989__4_6_131073,
     author = {N. Alon and M. Katchalski and W.R. Pulleyblank},
     title = {Cutting {Disjoint} {Disks} by {Straight} {Lines.}},
     journal = {Discrete & computational geometry},
     pages = {239--244},
     publisher = {mathdoc},
     volume = {4},
     number = {6},
     year = {1989},
     zbl = {0719.52006},
     url = {http://geodesic.mathdoc.fr/item/DCG_1989__4_6_131073/}
}