TY - JOUR AU - Stephen Keith AU - Xiao Zhong TI - The Poincaré inequality is an open ended condition JO - Annals of mathematics PY - 2008 SP - 575 EP - 599 VL - 167 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4007/annals.2008.167.575/ DO - 10.4007/annals.2008.167.575 LA - en ID - 10_4007_annals_2008_167_575 ER -