@article{MAN_1984__269_163942,
     author = {Bang-Yen Chen and Paul Verheyen},
     title = {Submanifolds with {Geodesic} {Normal} {Sections.}},
     journal = {Mathematische Annalen},
     pages = {417--430},
     publisher = {mathdoc},
     volume = {269},
     year = {1984},
     zbl = {0536.53053},
     url = {http://geodesic.mathdoc.fr/item/MAN_1984__269_163942/}
}