%0 Journal Article %A Toni Lassila %A Gianluigi Rozza %T Model reduction of semiaffinely parameterized partial differential equations by two-level affine approximation %J Comptes Rendus. Mathématique %D 2011 %P 61-66 %V 349 %N 1-2 %I Elsevier %R 10.1016/j.crma.2010.11.016 %G en %F CRMATH_2011__349_1-2_61_0