%0 Journal Article %A Lotfi Riahi %T Estimates of Green functions and their applications for parabolic operators with singular potentials %J Colloquium Mathematicum %D 2003 %P 267-283 %V 95 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm95-2-10/ %R 10.4064/cm95-2-10 %G en %F 10_4064_cm95_2_10