%0 Journal Article %A Martin A. Grepl %A Mark Kärcher %T Reduced basis a posteriori error bounds for parametrized linear-quadratic elliptic optimal control problems %J Comptes Rendus. Mathématique %D 2011 %P 873-877 %V 349 %N 15-16 %I Elsevier %R 10.1016/j.crma.2011.07.010 %G en %F CRMATH_2011__349_15-16_873_0