%0 Journal Article %A Kruglikov, Boris %A Lychagin, Valentin %T Multi-brackets of differential operators and compatibility of PDE systems %J Comptes Rendus. Mathématique %D 2006 %P 557-561 %V 342 %N 8 %I Elsevier %U http://www.numdam.org/articles/10.1016/j.crma.2006.02.013/ %R 10.1016/j.crma.2006.02.013 %G en %F CRMATH_2006__342_8_557_0