Electronic Journal of Differential Equations, Vol. 2011 (2011), No. 85, pp. 1-7. Title: Asymptotic behavior of solutions to a class of linear non-autonomous neutral delay differential equations Author: Guiling Chen (Leiden Univ., The Netherlands) Abstract: We study a class of linear non-autonomous neutral delay differential equations, and establish a criterion for the asymptotic behavior of their solutions, by using the corresponding characteristic equation. Submitted May 24, 2011. Published June 29, 2011. Math Subject Classifications: 34K11, 34K40, 34K25. Key Words: Neutral delay differential equation; characteristic equation; asymptotic behavior.