%0 Journal Article %A Michael Hirschhorn %A James A. Sellers %T Two congruences involving 4-cores %J The electronic journal of combinatorics %D 1996 %V 3 %N 2 %U http://geodesic.mathdoc.fr/articles/10.37236/1268/ %R 10.37236/1268 %F 10_37236_1268