%0 Journal Article %A GUERZHOY, P. %T Quadratic congruences for Cohen–Eisenstein series %J Glasgow mathematical journal %D 1999 %P 141-144 %V 41 %N 1 %U http://geodesic.mathdoc.fr/articles/10.1017/S001708959997060X/ %R 10.1017/S001708959997060X %F 10_1017_S001708959997060X