On the Bohr transform of almost-periodic solutions for some differential equations in abstract spaces.
On the boundedness and oscillation of solutions to .
On the boundedness and periodicity of solutions of second-order functional differential equations with a parameter
On the boundedness and the stability results for the solutions of certain third order non-linear differential equations
On the boundedness of a solution of a system of non-linear differential equations
On the boundedness of solutions of a certain fourth-order nonlinear differential equation
On the boundedness of solutions of higher order differential equations
On the boundedness of solutions of nonlinear second-order differential equations with parameter
On the boundedness of the solutions of the continuous Riccati equation.
On the Branching of Solutions of Quadratic Differential Equations.
On the bundle of solutions of a nonhomogeneous second order linear differential equation
On the center of the generalized Liénard system
In this paper, we discuss the conditions for a center for the generalized Liénard system or with , , , , , , and for . By using a different technique, that is, by introducing auxiliary systems and using the differential inquality theorem, we are able to generalize and improve some results in [1], [2].
On the composition conjectures.
On the concave solutions of the Blasius equation.
On the conditions for the oscillation of solutions of non-linear third order differential equations
On the Cordovan ogive
On the critical periods of Liénard systems with cubic restoring forces.
On the Darboux transformation. I.
On the density of the range for some nonlinear operators
On the direction of pitchfork bifurcation.