We study the oscillatory behaviour of all solutions of first-order neutral equations with variable coefficients. The obtained results extend and improve some of the well-known results in the literature. Some examples are given to show the evidence of our new results.
Fatima N. Ahmed. Rokiah Rozita Ahmad. Ummul Khair Salma Din. Mohd Salmi Md Noorani. "Some Further Results on Oscillations for Neutral Delay Differential Equations with Variable Coefficients." Abstr. Appl. Anal. 2014 1 - 7, 2014. https://doi.org/10.1155/2014/579023