TY - JOUR AU - Arkady Poliakovsky TI - Upper bounds for singular perturbation problems involving gradient fields JO - Journal of the European Mathematical Society PY - 2007 SP - 1 EP - 43 VL - 9 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4171/jems/70/ DO - 10.4171/jems/70 ID - JEMS_2007_9_1_a0 ER -