@article{MAN_1976__219_182772,
     author = {Wolfgang Henke},
     title = {\"Uber die isometrische {Fortsetzbarkeit} isometrischer {Immersionen} der {Standard-m-Sph\"are} {Sm(<}  {Rm+1)} in {Rm+2.}},
     journal = {Mathematische Annalen},
     pages = {261--276},
     publisher = {mathdoc},
     volume = {219},
     year = {1976},
     zbl = {0303.53024},
     url = {http://geodesic.mathdoc.fr/item/MAN_1976__219_182772/}
}