@article{10_4064_sm_95_2_133_139,
     author = {Piotr Mankiewicz},
     title = {Factoring the identity operator on a subspace of $l^{\ensuremath{\infty}}_{n}$},
     journal = {Studia Mathematica},
     pages = {133--139},
     publisher = {mathdoc},
     volume = {95},
     number = {2},
     year = {1989},
     doi = {10.4064/sm-95-2-133-139},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-95-2-133-139/}
}