@article{MAN_1983__265_163822,
     author = {John Cantwell and Lawrence Conlon},
     title = {Analytic {Foliations} and the {Theory} of {Levels.}},
     journal = {Mathematische Annalen},
     pages = {253--262},
     publisher = {mathdoc},
     volume = {265},
     year = {1983},
     zbl = {0507.57014},
     url = {http://geodesic.mathdoc.fr/item/MAN_1983__265_163822/}
}