@article{IM2_1999_63_2_a6,
     author = {S. D. Troitskaya},
     title = {Correction},
     journal = {Izvestiya. Mathematics },
     pages = {423},
     publisher = {mathdoc},
     volume = {63},
     number = {2},
     year = {1999},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1999_63_2_a6/}
}