%0 Journal Article %A Alfredo Bermúdez %A Pablo Gamallo %A María R. Nogueiras %A Rodolfo Rodríguez %T Approximation properties of lowest-order hexahedral Raviart–Thomas finite elements %J Comptes Rendus. Mathématique %D 2005 %P 687-692 %V 340 %N 9 %I Elsevier %R 10.1016/j.crma.2005.03.023 %G en %F CRMATH_2005__340_9_687_0