%0 Journal Article %A Arkady Poliakovsky %T Upper bounds for singular perturbation problems involving gradient fields %J Journal of the European Mathematical Society %D 2007 %P 1-43 %V 9 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4171/jems/70/ %R 10.4171/jems/70 %F JEMS_2007_9_1_a0