@article{10_4064_fm_133_2_101_112,
     author = {L. Loveland},
     title = {When a subset of $E^n$ locally lies on a sphere},
     journal = {Fundamenta Mathematicae},
     pages = {101--112},
     publisher = {mathdoc},
     volume = {133},
     number = {2},
     year = {1989},
     doi = {10.4064/fm-133-2-101-112},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-133-2-101-112/}
}