@article{10_4064_cm107_2_7,
     author = {Gennadiy Averkov},
     title = {Circumradius versus  side lengths
 of triangles in linear normed spaces},
     journal = {Colloquium Mathematicum},
     pages = {273--285},
     publisher = {mathdoc},
     volume = {107},
     number = {2},
     year = {2007},
     doi = {10.4064/cm107-2-7},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm107-2-7/}
}