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@article{JRAM_1989__395_153118, author = {Svetlana Katok}, title = {Finite spanning sets for cusp forms and a related geometric result.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {186--195}, publisher = {mathdoc}, volume = {395}, year = {1989}, zbl = {0666.10016}, url = {http://geodesic.mathdoc.fr/item/JRAM_1989__395_153118/} }
Svetlana Katok. Finite spanning sets for cusp forms and a related geometric result.. Journal für die reine und angewandte Mathematik, Tome 395 (1989), pp. 186-195. http://geodesic.mathdoc.fr/item/JRAM_1989__395_153118/