TY  - JOUR
AU  - Yu. A. Ryabov
AU  - M. F. Korolev
TI  - Letter to the editors: ``The construction of periodic solutions of certain linear and quasilinear equations'' (Differencial'nye Uravnenija \textbf{11} (1975), 280--286)
JO  - Differencialʹnye uravneniâ
PY  - 1975
SP  - 1713
VL  - 11
IS  - 9
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1975_11_9_a23/
LA  - ru
ID  - DE_1975_11_9_a23
ER  -