%0 Journal Article %A Loubes, Jean-Michel %T $ {\ell }^{1}$ sparsity and applications in estimation %J Comptes Rendus. Mathématique %D 2007 %P 399-402 %V 344 %N 6 %I Elsevier %U http://www.numdam.org/articles/10.1016/j.crma.2007.01.027/ %R 10.1016/j.crma.2007.01.027 %G en %F CRMATH_2007__344_6_399_0