@article{1255378500,
author = {Cohen, I. S. and Zariski, Oscar},
title = {A fundamental inequality in the theory of extensions of valuations},
journal = {Illinois J. Math.},
volume = {1},
number = {1},
year = {1957},
pages = { 1-8},
language = {en},
url = {http://dml.mathdoc.fr/item/1255378500}
}
Cohen, I. S.; Zariski, Oscar. A fundamental inequality in the theory of extensions of valuations. Illinois J. Math., Tome 1 (1957) no. 1, pp. 1-8. http://gdmltest.u-ga.fr/item/1255378500/