@article{10_4064_sm_56_3_263_276,
     author = {I. Edelstein and P. Wojtaszczyk},
     title = {On projections and unconditional bases in direct sums of {Banach} spaces},
     journal = {Studia Mathematica},
     pages = {263--276},
     publisher = {mathdoc},
     volume = {56},
     number = {3},
     year = {1976},
     doi = {10.4064/sm-56-3-263-276},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-56-3-263-276/}
}