TY  - JOUR
AU  - N. P. Kovalevskiǐ
TI  - On the question of the existence of solutions of differential equations with deviating argument
JO  - Differencialʹnye uravneniâ
PY  - 1972
SP  - 1957
EP  - 1962
VL  - 8
IS  - 11
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1972_8_11_a5/
LA  - ru
ID  - DE_1972_8_11_a5
ER  -