@article{SM_1994_79_1_a12,
     author = {G. A. Chechkin},
     title = {Averaging of boundary value problems with a~singular perturbation of the~boundary conditions},
     journal = {Sbornik. Mathematics},
     pages = {191--222},
     year = {1994},
     volume = {79},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1994_79_1_a12/}
}