Copyright © 2011 J. Diblík and A. Zafer. This is an open access article distributed under the
Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
The stability of the zero solution of a system of first-order
linear functional differential equations with nonconstant delay is considered.
Sufficient conditions for stability, uniform stability, asymptotic stability, and
uniform asymptotic stability are established.