%0 Journal Article %A Sönke Blunck %T Perturbation of analytic operators and temporal regularity of discrete heat kernels %J Colloquium Mathematicum %D 2000 %P 189-201 %V 86 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-86-2-189-201/ %R 10.4064/cm-86-2-189-201 %G en %F 10_4064_cm_86_2_189_201