TY  - JOUR
AU  - E. I. Bravyi
TI  - On unimprovable conditions of the solvability of the periodic problem for second order functional differential equations
JO  - Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹûternye nauki
PY  - 2013
SP  - 3
EP  - 19
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/VUU_2013_3_a0/
LA  - ru
ID  - VUU_2013_3_a0
ER  -