This paper investigates the relationship between an unperturbed differential system and a perturbed differential system that have initial time difference. Notions of -stability for differential systems with initial time difference are introduced, and stability criteria are formulated by using variation of parameter techniques.
"-Stability for Differential Systems Relative to Initial Time Difference." Abstr. Appl. Anal. 2013 (SI55) 1 - 4, 2013. https://doi.org/10.1155/2013/827482