@article{IM2_1997_61_3_a5,
     author = {S. A. Nazarov and M. V. Olyushin},
     title = {Approximation of smooth contours by polygonal ones. {Paradoxes} in problems for the {Lame} system},
     journal = {Izvestiya. Mathematics },
     pages = {619--646},
     publisher = {mathdoc},
     volume = {61},
     number = {3},
     year = {1997},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1997_61_3_a5/}
}