TY - JOUR AU - Bigolin, Francesco TI - Regularity results for a class of obstacle problems in Heisenberg groups JO - Applications of Mathematics PY - 2013 SP - 531 EP - 554 VL - 58 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.1007/s10492-013-0027-1/ DO - 10.1007/s10492-013-0027-1 LA - en ID - 10_1007_s10492_013_0027_1 ER -