Directory UMM :Journals:Journal_of_mathematics:EJQTDE:
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Kusano, Asymptotic behavior of nonoscillatory solu- tions of nonlinear functional differential equations of neutral type... Kusano, Existence of oscillatory solutions for func-
Ashordia, The conditions for existence and uniqueness of solutions of nonlinear boundary value problems for systems of generalized ordinary differential equations. Razmadze
Ashordia, The conditions of existence and of uniqueness of solutions of nonlinear boundary value problems for systems of general- ized ordinary differential equations.. Ashordia, On
Some authors have used fixed point the- orems to show the existence of positive solutions to boundary value problems for ordinary differential equations, difference equations,
Proytcheva, Existence and asymptotic behavior of nonoscillatory solutions of second order neutral differential equations with maxima, J. Bainov, Oscillatory and asymptotic behavior
[21] Hern´andez, E.; McKibben, M.; Some comments on: “ Existence of solutions of abstract nonlinear second-order neutral functional integrodifferential equations.. Regularity
Raffoul, Existence of periodic and positive peri- odic solutions in totally nonlinear delay differential equations (preprint).
That is, some authors have used fixed point theorems to show the existence of pos- itive solutions to boundary value problems for ordinary differential equations, difference
