%0 Journal Article %A Iain Smears %T On the efficiency of a posteriori error estimators for parabolic partial differential equations in the energy norm %J The SMAI Journal of computational mathematics %D 2026 %P 27-42 %V 12 %I Société de Mathématiques Appliquées et Industrielles %U https://smai-jcm.centre-mersenne.org/articles/10.5802/jcm.142/ %R 10.5802/jcm.142 %G en %F SMAI-JCM_2026__12__27_0