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@article{IM_1992__110_2_144047, author = {N\'andor Sim\'anyi}, title = {The {K-property} of {N} billiard balls {II.} {Computation} of neutral linear spaces.}, journal = {Inventiones mathematicae}, pages = {151--172}, publisher = {mathdoc}, volume = {110}, number = {2}, year = {1992}, zbl = {0767.58030}, url = {http://geodesic.mathdoc.fr/item/IM_1992__110_2_144047/} }
Nándor Simányi. The K-property of N billiard balls II. Computation of neutral linear spaces.. Inventiones mathematicae, Tome 110 (1992) no. 2, pp. 151-172. http://geodesic.mathdoc.fr/item/IM_1992__110_2_144047/