@article{10_4153_CMB_1980_029_4,
     author = {Azzam, A.},
     title = {Smoothness {Properties} of {Bounded} {Solutions} of {Dirichlet's} {Problem} for {Elliptic} {Equations} in {Regions} with {Corners} on the {Boundary}},
     journal = {Canadian mathematical bulletin},
     pages = {213--226},
     year = {1980},
     volume = {23},
     number = {2},
     doi = {10.4153/CMB-1980-029-4},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1980-029-4/}
}