@article{10_4064_sm_32_3_247_268,
     author = {A. Pe{\l}czy\'nski},
     title = {Universal bases},
     journal = {Studia Mathematica},
     pages = {247--268},
     publisher = {mathdoc},
     volume = {32},
     number = {3},
     year = {1969},
     doi = {10.4064/sm-32-3-247-268},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-32-3-247-268/}
}