Periodic solutions of second-order nonlinear system of integro-differential equations unsolvable for the highest derivative

by R. N. Butris
Published 2008-03-01

The investigation of solutions for nonlinear system of differential equations with boundary conditions

by R.N. Butris, Azzam salahdin younis
Published 2007-04-01

The existence and approximation of the periodic solutions for system of second order nonlinear differential equationsby using Lebesgue integrable

by Merna Adel Aziz, R.N. Butris
Published 2007-06-01

The existence and approximation of the periodic solutions for system of first order nonlinear differential equationsby using Lebesgue integrable

by R. N.Butris, Merna Adel Aziz
Published 2008-03-01