%0 Journal Article %A Augusto C. Ponce %T A variant of Poincaré's inequality %J Comptes Rendus. Mathématique %D 2003 %P 253-257 %V 337 %N 4 %I Elsevier %R 10.1016/S1631-073X(03)00313-3 %G en %F CRMATH_2003__337_4_253_0