@article{CRMATH_2011__349_3-4_195_0,
     author = {Adamczak, Rados{\l}aw and Litvak, Alexander E. and Pajor, Alain and Tomczak-Jaegermann, Nicole},
     title = {Sharp bounds on the rate of convergence of the empirical covariance matrix},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {195--200},
     publisher = {Elsevier},
     volume = {349},
     number = {3-4},
     year = {2011},
     doi = {10.1016/j.crma.2010.12.014},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/j.crma.2010.12.014/}
}