%0 Journal Article %A M. Bertoldi %A S. Fornaro %T Gradient estimates in parabolic problems with unbounded coefficients %J Studia Mathematica %D 2004 %P 221-254 %V 165 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm165-3-3/ %R 10.4064/sm165-3-3 %G en %F 10_4064_sm165_3_3