@article{GDZPPN002324296,
title = {Analytic Foliations and the Theory of Levels.},
journal = {Mathematische Annalen},
volume = {264},
year = {1983},
pages = {253-262},
zbl = {0507.57014},
url = {http://dml.mathdoc.fr/item/GDZPPN002324296}
}
Cantwell, John; Conlon, Lawrence. Analytic Foliations and the Theory of Levels.. Mathematische Annalen, Tome 264 (1983) pp. 253-262. http://gdmltest.u-ga.fr/item/GDZPPN002324296/