@article{SM_1976_30_2_a0,
     author = {V. P. Mikhailov},
     title = {On the boundary values of solutions of elliptic equations in domains with a~smooth boundary},
     journal = {Sbornik. Mathematics},
     pages = {143--166},
     year = {1976},
     volume = {30},
     number = {2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1976_30_2_a0/}
}