@article{1256050743,
author = {Connes, A.},
title = {On the hierarchy of W. Krieger},
journal = {Illinois J. Math.},
volume = {19},
number = {4},
year = {1975},
pages = { 428-432},
language = {en},
url = {http://dml.mathdoc.fr/item/1256050743}
}
Connes, A. On the hierarchy of W. Krieger. Illinois J. Math., Tome 19 (1975) no. 4, pp. 428-432. http://gdmltest.u-ga.fr/item/1256050743/