On the normal systems of differential equations
On the n-th order iterative ordinary linear differential equations.
On the Number of Solutions of the Equation ...= ...aj(t)xj, 0...t...1, for which x(0) = x(1).
On the opial type criterion for the well-posedness of the Cauchy problem for linear systems of generalized ordinary differential equations
The Cauchy problem for the system of linear generalized ordinary differential equations in the J. Kurzweil sense , with a unique solution is considered....
On the oscillation of a class of linear homogeneous third order differential equations
In this paper we have considered completely the equation where , , and such that , and . It has been shown that the set of all oscillatory solutions of (*) forms a two-dimensional subspace of the solution space of (*) provided that (*) has an oscillatory solution. This answers a question raised by S. Ahmad and A. C. Lazer earlier.
On the oscillation of a linear differential equation of second order
On the oscillation of solutions of a class of linear fourth order differential equations
On the oscillation of ty" + p(t)y = 0 with ʃ p almost periodic
On the oscillations of the solutions of the equation
On the position of nodes of associated equations to the differential equation
On the properties of central dispersions of linear second order differential equations being of finite type-special
On the question of enclosing solutions of linear functional-differential systems.
On the question of generalized solution to algebro-differential systems.
On the relation of solutions and coefficients of linear differential equation
On the solution of the differential system
On the Solutions of (ry')' + qy = f.
On the stability of solutions of linear differential systems with slowly varying coefficients
On the structure of second-order linear differential equations with given characteristic multipliers in the generalized Floquet theory
On the structure of the second-order periodic linear differential equations with the same characteristic multipliers
On the theory of phases of academican O. Borůvka