@article{VMUMM_1983_3_a19,
     author = {V. I. Borzov},
     title = {Estimation of the value of a small parameter in a linear singularly perturbed system of differential equations},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {117--121},
     publisher = {mathdoc},
     number = {3},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1983_3_a19/}
}