@incollection{MSMF_1972__31-32__395_0, author = {Wojtaszczyk, Przemyslaw}, title = {Approximation properties and universal {Banach} spaces}, booktitle = {Colloque d'analyse fonctionnelle (Bordeaux, 1971)}, author = {Collectif}, series = {M\'emoires de la Soci\'et\'e Math\'ematique de France}, pages = {395--398}, publisher = {Soci\'et\'e math\'ematique de France}, number = {31-32}, year = {1972}, doi = {10.24033/msmf.107}, zbl = {0243.46031}, mrnumber = {50 #8027}, url = {http://archive.numdam.org/articles/10.24033/msmf.107/} }