%0 Journal Article %A Costas Poulios %T Non-separable tree-like Banach spaces and Rosenthal's $\ell _{1}$-theorem %J Studia Mathematica %D 2014 %P 1-12 %V 221 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4064/sm221-1-1/ %R 10.4064/sm221-1-1 %G en %F 10_4064_sm221_1_1