%0 Journal Article %A Jonathan Ben-Artzi %A Anders C. Hansen %A Olavi Nevanlinna %A Markus Seidel %T New barriers in complexity theory: On the solvability complexity index and the towers of algorithms %J Comptes Rendus. Mathématique %D 2015 %P 931-936 %V 353 %N 10 %I Elsevier %R 10.1016/j.crma.2015.08.002 %G en %F CRMATH_2015__353_10_931_0