@article{MAN_1976__224_162902,
     author = {Jeffrey Nunemacher},
     title = {Approximation {Theory} on {Totally} {Real} {Submanifolds.}},
     journal = {Mathematische Annalen},
     pages = {129--142},
     year = {1976},
     volume = {224},
     zbl = {0333.32015},
     url = {http://geodesic.mathdoc.fr/item/MAN_1976__224_162902/}
}