@article{MAN_1978__233_163099,
     author = {S.M. Webster},
     title = {On the {Moser} {Normal} {Form} ata {Non-Umbilic} {Point.}},
     journal = {Mathematische Annalen},
     pages = {97--102},
     year = {1978},
     volume = {233},
     zbl = {0358.32013},
     url = {http://geodesic.mathdoc.fr/item/MAN_1978__233_163099/}
}