@article{10_1090_S0894_0347_1993_1201238_0,
     author = {Gowers, W. T. and Maurey, B.},
     title = {The unconditional basic sequence problem},
     journal = {Journal of the American Mathematical Society},
     pages = {851--874},
     publisher = {mathdoc},
     volume = {06},
     number = {4},
     year = {1993},
     doi = {10.1090/S0894-0347-1993-1201238-0},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-1993-1201238-0/}
}