@article{1240319482,
author = {KATSURADA, Hidenori},
title = {Generalized Hasse-Witt invariants and unramified Galois extensions of an algebraic function field},
journal = {J. Math. Soc. Japan},
volume = {31},
number = {4},
year = {1979},
pages = { 101-125},
language = {en},
url = {http://dml.mathdoc.fr/item/1240319482}
}
KATSURADA, Hidenori. Generalized Hasse-Witt invariants and unramified Galois extensions of an algebraic function field. J. Math. Soc. Japan, Tome 31 (1979) no. 4, pp. 101-125. http://gdmltest.u-ga.fr/item/1240319482/