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@article{DE_1988_24_2_a7, author = {V. P. Tikhonov}, title = {On relatedness theorems for equations with retarded argument}, journal = {Differencialʹnye uravneni\^a}, pages = {240--250}, publisher = {mathdoc}, volume = {24}, number = {2}, year = {1988}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1988_24_2_a7/} }
V. P. Tikhonov. On relatedness theorems for equations with retarded argument. Differencialʹnye uravneniâ, Tome 24 (1988) no. 2, pp. 240-250. http://geodesic.mathdoc.fr/item/DE_1988_24_2_a7/