الفهرس 
Chapter 1 . Preliminaries and Basic TheoremsOnly 14 pages are availabe for public view
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Abstract
In this thesis, we discuss the oscillatory behavior of solutions of the
second order nonlinear damped differential equations of the form
( ( ) ( ( )) ( ))
( ) ( ) ( ) ( ( ( )))
and the oscillatory behavior of the second order nonlinear neutral delay
differential equation
( ( ) ( ( ))| ( )| ( ))
( ( ( )))
where
( ) ( ) ( ) ( ( )) and is the ratio of two odd integers.
The obtained results improve and extend some known results in the
literature. We give some examples that justisfy our results.