@article{CRMATH_2011__349_3-4_195_0,
     author = {Rados{\l}aw Adamczak and Alexander E. Litvak and Alain Pajor and Nicole Tomczak-Jaegermann},
     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},
}