%0 Journal Article %A Cummins, C. J. %T Cusp Forms Like Δ %J Canadian mathematical bulletin %D 2009 %P 53-62 %V 52 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-2009-006-1/ %R 10.4153/CMB-2009-006-1 %F 10_4153_CMB_2009_006_1