@article{DAN_1976_227_5_a0,
     author = {Yu. P. Boglaev},
     title = {An iterative method for the approximate solution of singularly perturbed problems},
     journal = {Doklady Akademii Nauk},
     pages = {1033--1036},
     publisher = {mathdoc},
     volume = {227},
     number = {5},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1976_227_5_a0/}
}