@article{10_4064_cm_13_2_235_246,
     author = {W. B. R. Lickorish and S. \'Swierczkowski},
     title = {A characterization of the ball},
     journal = {Colloquium Mathematicum},
     pages = {235--246},
     publisher = {mathdoc},
     volume = {13},
     number = {2},
     year = {1964},
     doi = {10.4064/cm-13-2-235-246},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-13-2-235-246/}
}