@article{IM2_2003_67_6_a2,
     author = {P. L. Gurevich},
     title = {Non-local elliptic problems with non-linear argument transformations near the points of conjugation},
     journal = {Izvestiya. Mathematics },
     pages = {1149--1186},
     publisher = {mathdoc},
     volume = {67},
     number = {6},
     year = {2003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2003_67_6_a2/}
}