%0 Journal Article %A Hans-Fredrick Aas %T Congruences for the Coefficients of the Modular Invariant j(...). %J Mathematica Scandinavica %D 1964 %P 64-68 %V 15 %I mathdoc %U http://geodesic.mathdoc.fr/item/MS2_1964__15_165889/ %F MS2_1964__15_165889