@article{DE_1972_8_3_a7,
     author = {A. M. Rodionov and V. S. Toroptsev},
     title = {A generalization of the perturbation method for equations with lag, and application of it to the computation of transition processes in automatic control systems},
     journal = {Differencialʹnye uravneni\^a},
     pages = {459--464},
     publisher = {mathdoc},
     volume = {8},
     number = {3},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1972_8_3_a7/}
}