%0 Journal Article %A Hejhal, Dennis A. %A Rackner, Barry N. %T On the topography of Maass waveforms for . %J Experimental mathematics %D 1992 %P 275-305 %V 1 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/EXMA_1992__1_4_231520/ %G en %F EXMA_1992__1_4_231520