@article{DAN_1989_306_5_a2,
     author = {E. P. Kubishkin},
     title = {The method of infinite-dimensional normalization in the investigation of self-oscillatory solutions of a class of singularly perturbed boundary value problems},
     journal = {Doklady Akademii Nauk},
     pages = {1041--1045},
     publisher = {mathdoc},
     volume = {306},
     number = {5},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1989_306_5_a2/}
}