%0 Journal Article %A V. V. Zhikov %T Estimates of the Nash–Aronson type for the diffusion equation with non-symmetric matrix and %J Sbornik. Mathematics %D 2006 %P 1775-1804 %V 197 %N 12 %U http://geodesic.mathdoc.fr/item/SM_2006_197_12_a3/ %G en %F SM_2006_197_12_a3