@article{10_4064_sm_31_2_125_134,
     author = {I. Singer},
     title = {On the constants of basic sequences in {Banach} spaces},
     journal = {Studia Mathematica},
     pages = {125--134},
     publisher = {mathdoc},
     volume = {31},
     number = {2},
     year = {1968},
     doi = {10.4064/sm-31-2-125-134},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-31-2-125-134/}
}