On an algebraic structure of a group of phases
On an almost periodicity criterion of solutions for systems of nonhomogeneous linear differential equations with almost periodic coefficients
On an asymptotic behaviour of solutions of the differential equation of the fourth order
On Apery's differential operator
On asymptotic behavior of solutions of second order linear differential equations.
On asymptotic behaviour of central dispersions of linear differential equations of the second order
On asymptotic behaviour of oscillatory solutions for fourth order differential equations.
On asymptotic integrations of
On asymptotic properties of central dispersions of the -th kind of ,
On boundary value problems of periodic type for ordinary odd order differential equations
On certain properties of linear iterative equations
An expression for the coefficients of a linear iterative equation in terms of the parameters of the source equation is given both for equations in standard form and for equations in reduced normal form. The operator that generates an iterative equation of a general order in reduced normal form is also obtained and some other properties of iterative equations are established. An expression for the parameters of the source equation of the transformed equation under equivalence transformations is obtained,...
On Certain Properties of Soloutions of Second-Order Linear Differential Equations.
On conjugacy functions of second-order linear differential equations
On conjugacy of high-order linear ordinary differential equations.
On conjugate points of solutions of non-selfadjoint differential systems
On equation of finite type, 1-special, with the same central dispersion of the first kind
On existence of oscillatory solution of the system of differential equations
On fundamental systems for differential equations of Kamke type.
On general solutions of linear differential equations.
On generalized periodic solutions of linear differential equations of order n