@article{MAN_1976__221_162838,
     author = {Chao-Chu Liang},
     title = {Multifoliations on {Open} {Manifolds.}},
     journal = {Mathematische Annalen},
     pages = {143--146},
     publisher = {mathdoc},
     volume = {221},
     year = {1976},
     zbl = {0321.57018},
     url = {http://geodesic.mathdoc.fr/item/MAN_1976__221_162838/}
}