Arnold Neumaier, J. J. Seidel. Discrete hyperbolic geometry. Combinatorica, 3(2):219-237, 1983.
@article{NeumaierS83, title = {Discrete hyperbolic geometry}, author = {Arnold Neumaier and J. J. Seidel}, year = {1983}, researchr = {https://researchr.org/publication/NeumaierS83}, cites = {0}, citedby = {0}, journal = {Combinatorica}, volume = {3}, number = {2}, pages = {219-237}, }