@article{MZM_1991_49_5_a4,
     author = {A. B. Vasil'eva and V. T. Volkov},
     title = {Asymptotic approximation of a periodic solution of the second boundary-value problem for systems with small diffusion},
     journal = {Matemati\v{c}eskie zametki},
     pages = {32--36},
     publisher = {mathdoc},
     volume = {49},
     number = {5},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1991_49_5_a4/}
}