@article{MAN_1970__188_162055,
     author = {D. FERUS},
     title = {Totally {Geodesic} {Foliations.}},
     journal = {Mathematische Annalen},
     pages = {313--316},
     publisher = {mathdoc},
     volume = {188},
     year = {1970},
     zbl = {0194.52804},
     url = {http://geodesic.mathdoc.fr/item/MAN_1970__188_162055/}
}