%0 Journal Article %A Kani, Ernst %T Relations Between the Genera and Between the Hasse-Witt Invariants of Galois Coverings of Curves %J Canadian mathematical bulletin %D 1985 %P 321-327 %V 28 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1985-038-0/ %R 10.4153/CMB-1985-038-0 %F 10_4153_CMB_1985_038_0