@article{10_4153_CJM_1966_037_8,
     author = {Hurd, A. E.},
     title = {Boundary {Regularity} in the {Sobolev} {Imbedding} {Theorems}},
     journal = {Canadian journal of mathematics},
     pages = {350--356},
     year = {1966},
     volume = {18},
     number = {1},
     doi = {10.4153/CJM-1966-037-8},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1966-037-8/}
}