@article{RM_1967_22_2_a6,
     author = {A. B. Vasil'eva and V. M. Volosov},
     title = {The work of {Tikhonov} and his pupils on ordinary differential equations containing a~small parameter},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {124--142},
     publisher = {mathdoc},
     volume = {22},
     number = {2},
     year = {1967},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1967_22_2_a6/}
}