@article{10_4064_fm_85_2_197_202,
     author = {Karol Borsuk},
     title = {Concerning the shapes of n-dimensional spheres},
     journal = {Fundamenta Mathematicae},
     pages = {197--202},
     publisher = {mathdoc},
     volume = {85},
     number = {2},
     year = {1974},
     doi = {10.4064/fm-85-2-197-202},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-85-2-197-202/}
}