@article{10_4153_CMB_1979_049_1,
     author = {Wang, James Li-Ming},
     title = {Approximation on {Boundary} {Sets}},
     journal = {Canadian mathematical bulletin},
     pages = {377--379},
     year = {1979},
     volume = {22},
     number = {3},
     doi = {10.4153/CMB-1979-049-1},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1979-049-1/}
}