TY  - JOUR
AU  - B. P. Tkach
TI  - Periodic solution of systems of partial differential equations of neutral type
JO  - Differencialʹnye uravneniâ
PY  - 1969
SP  - 735
EP  - 748
VL  - 5
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1969_5_4_a12/
LA  - ru
ID  - DE_1969_5_4_a12
ER  -