@article{10_4064_sm_19_2_115_132, author = {A. Alexiewicz and Z. Semadeni}, title = {Some properties of two-norm spaces and a characterization of reflexivity of {Banach} spaces}, journal = {Studia Mathematica}, pages = {115--132}, publisher = {mathdoc}, volume = {19}, number = {2}, year = {1960}, doi = {10.4064/sm-19-2-115-132}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-19-2-115-132/} }