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@article{DCG_1994__12_1_131324, author = {M. Sharir and P.K. Agarwal}, title = {On the {Number} of {Views} of {Polyhedral} {Terrains.}}, journal = {Discrete & computational geometry}, pages = {177--182}, publisher = {mathdoc}, volume = {12}, number = {1}, year = {1994}, zbl = {0809.52011}, url = {http://geodesic.mathdoc.fr/item/DCG_1994__12_1_131324/} }
M. Sharir; P.K. Agarwal. On the Number of Views of Polyhedral Terrains.. Discrete & computational geometry, Tome 12 (1994) no. 1, pp. 177-182. http://geodesic.mathdoc.fr/item/DCG_1994__12_1_131324/