@article{10_4064_cm_45_1_45_47,
     author = {N. Tomczak-Jaegermann},
     title = {Problems on {Banach} spaces},
     journal = {Colloquium Mathematicum},
     pages = {45--47},
     publisher = {mathdoc},
     volume = {45},
     number = {1},
     year = {1981},
     doi = {10.4064/cm-45-1-45-47},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-45-1-45-47/}
}