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@article{EXMA_1992__1_4_231520, author = {Hejhal, Dennis A. and Rackner, Barry N.}, title = {On the topography of {Maass} waveforms for .}, journal = {Experimental mathematics}, pages = {275--305}, publisher = {mathdoc}, volume = {1}, number = {4}, year = {1992}, zbl = {0813.11035}, language = {en}, url = {http://geodesic.mathdoc.fr/item/EXMA_1992__1_4_231520/} }
Hejhal, Dennis A.; Rackner, Barry N. On the topography of Maass waveforms for .. Experimental mathematics, Tome 1 (1992) no. 4, pp. 275-305. http://geodesic.mathdoc.fr/item/EXMA_1992__1_4_231520/