@article{10_4064_sm_45_2_191_210,
     author = {T. Figiel},
     title = {Factorization of compact operators and applications to the approximation problem},
     journal = {Studia Mathematica},
     pages = {191--210},
     publisher = {mathdoc},
     volume = {45},
     number = {2},
     year = {1973},
     doi = {10.4064/sm-45-2-191-210},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-45-2-191-210/}
}