@article{10_4064_sm_19_2_149_158,
     author = {S. Kurepa},
     title = {On some functional equations in {Banach} spaces},
     journal = {Studia Mathematica},
     pages = {149--158},
     publisher = {mathdoc},
     volume = {19},
     number = {2},
     year = {1960},
     doi = {10.4064/sm-19-2-149-158},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-19-2-149-158/}
}