@article{DCG_1986__1_131000,
     author = {R. Tamassia and Ioannis G. Tollis},
     title = {A {Unified} {Approach} to {Visibility} {Representations} of {Planar} {Graphs.}},
     journal = {Discrete & computational geometry},
     pages = {321--342},
     publisher = {mathdoc},
     volume = {1},
     year = {1986},
     zbl = {0607.05026},
     url = {http://geodesic.mathdoc.fr/item/DCG_1986__1_131000/}
}