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@article{EXMA_2006__15_2_231002, author = {Schwartz, Richard Evan}, title = {Obtuse triangular billiards. {I:} {Near} the triangle.}, journal = {Experimental mathematics}, pages = {161--182}, publisher = {mathdoc}, volume = {15}, number = {2}, year = {2006}, zbl = {1112.37030}, language = {en}, url = {http://geodesic.mathdoc.fr/item/EXMA_2006__15_2_231002/} }
Schwartz, Richard Evan. Obtuse triangular billiards. I: Near the triangle.. Experimental mathematics, Tome 15 (2006) no. 2, pp. 161-182. http://geodesic.mathdoc.fr/item/EXMA_2006__15_2_231002/