%0 Journal Article
%A Yu. A. Ryabov
%A M. F. Korolev
%T Letter to the editors: ``The construction of periodic solutions of certain linear and quasilinear equations'' (Differencial'nye Uravnenija \textbf{11} (1975), 280--286)
%J Differencialʹnye uravneniâ
%D 1975
%P 1713
%V 11
%N 9
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1975_11_9_a23/
%G ru
%F DE_1975_11_9_a23