@article{MM2_1989__63_3_155385,
     author = {Barbara Huisken},
     title = {Second-Order {Boundary} regularity for quasilinear variational inequalities.},
     journal = {Manuscripta mathematica},
     pages = {333--342},
     publisher = {mathdoc},
     volume = {63},
     number = {3},
     year = {1989},
     zbl = {0703.49013},
     url = {http://geodesic.mathdoc.fr/item/MM2_1989__63_3_155385/}
}