%0 Journal Article %A John E. Andersson %T Boundary regularity for a parabolic obstacle type problem %J Interfaces and free boundaries %D 2010 %P 279-291 %V 12 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4171/ifb/235/ %R 10.4171/ifb/235 %F 10_4171_ifb_235