Herbert Koch, Angkana Rüland and Wenhui Shi The variable coefficient thin obstacle problem: Carleman inequalities Adv. Math., 301: 820--866 2016 http://dx.doi.org/10.1016/j.aim.2016.06.023
2015
Herbert Koch, Angkana Rüland and Wenhui Shi The Variable Coefficient Thin Obstacle Problem: Optimal Regularity and Regularity of the Regular Free Boundary 2015 http://arXiv.org/abs/1504.03525