@article{IM2_1987_29_3_a1,
     author = {V. G. Maz'ya and S. A. Nazarov},
     title = {Paradoxes of limit passage in solutions of boundary value problems involving the approximation of smooth domains by polygonal domains},
     journal = {Izvestiya. Mathematics },
     pages = {511--533},
     publisher = {mathdoc},
     volume = {29},
     number = {3},
     year = {1987},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1987_29_3_a1/}
}