%0 Journal Article %A A. A. Kovalevsky %T Entropy solutions of the Dirichlet problem for a~class of non-linear elliptic fourth-order equations with right-hand sides in~$L^1$ %J Izvestiya. Mathematics %D 2001 %P 231-283 %V 65 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM2_2001_65_2_a1/ %G en %F IM2_2001_65_2_a1