%0 Journal Article %A Nikiforov, Vladimir %T The trace norm of r-partite graphs and matrices %J Comptes Rendus. Mathématique %D 2015 %P 471-475 %V 353 %N 6 %I Elsevier %U http://www.numdam.org/articles/10.1016/j.crma.2015.03.013/ %R 10.1016/j.crma.2015.03.013 %G en %F CRMATH_2015__353_6_471_0