@article{INTF_1988_34_a4,
     author = {A. M. Il'in},
     title = {A boundary layer},
     journal = {Itogi Nauki i Tekhniki. Seriya Sovremennye Problemy Matematiki. Fundamental'nye Napravleniya },
     pages = {175--213},
     publisher = {mathdoc},
     volume = {34},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/INTF_1988_34_a4/}
}