Electronic Journal of Differential Equations,
Vol. 2010(2010), No. 95, pp. 1-5.

Title: Asymptotic properties of solutions to linear 
       nonautonomous delay differential equations through 
       generalized characteristic equations

Authors: Claudio Cuevas (Univ. Federal de Pernambuco, Brazil)
         Miguel V. S. Frasson (Univ. de Sao Paulo, Brazil)

Abstract:
  We study some properties concerning the asymptotic behavior of
  solutions to nonautonomous retarded functional differential
  equations, depending on the knowledge of certain solutions of the
  associated generalized characteristic equation.

Submitted May 6, 2010. Published July 15, 2010.
Math Subject Classifications: 39B99
Key Words: Functional differential equations; generalized
           characteristic equation; asymptotic behavior.