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@article{DCG_1993__9_2_131245, author = {J. Eckhoff}, title = {A {Gallai-Type} {Transversal} {Problem} in the {Plane.}}, journal = {Discrete & computational geometry}, pages = {203--214}, publisher = {mathdoc}, volume = {9}, number = {2}, year = {1993}, zbl = {0772.52002}, url = {http://geodesic.mathdoc.fr/item/DCG_1993__9_2_131245/} }
J. Eckhoff. A Gallai-Type Transversal Problem in the Plane.. Discrete & computational geometry, Tome 9 (1993) no. 2, pp. 203-214. http://geodesic.mathdoc.fr/item/DCG_1993__9_2_131245/