@article{10_4064_sm_14_1_82_83,
     author = {J. Kurzweil},
     title = {A characterization of analytic operations in real {Banach} spaces},
     journal = {Studia Mathematica},
     pages = {82--83},
     publisher = {mathdoc},
     volume = {14},
     number = {1},
     year = {1953},
     doi = {10.4064/sm-14-1-82-83},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-14-1-82-83/}
}