@article{10_4064_sm_112_3_203_211,
     author = {M. Fabian},
     title = {On an extension of norms from a subspace to the whole {Banach} space keeping their rotundity},
     journal = {Studia Mathematica},
     pages = {203--211},
     publisher = {mathdoc},
     volume = {112},
     number = {3},
     year = {1994},
     doi = {10.4064/sm-112-3-203-211},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-112-3-203-211/}
}