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@article{DE_1982_18_3_a23, author = {N. P. Oparin}, title = {Approximation of linear stationary differential equations with deviating argument}, journal = {Differencialʹnye uravneni\^a}, pages = {545--547}, publisher = {mathdoc}, volume = {18}, number = {3}, year = {1982}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1982_18_3_a23/} }
N. P. Oparin. Approximation of linear stationary differential equations with deviating argument. Differencialʹnye uravneniâ, Tome 18 (1982) no. 3, pp. 545-547. http://geodesic.mathdoc.fr/item/DE_1982_18_3_a23/