In this note, asymptotic stability of linear neutral delay-differential sys
tems is investigated. A delay-independent sufficient condition for the stab
ility of the system is derived in terms of the spectral radius. The propose
d criterion requires more relaxed assumption than those reported in the lit
erature. The effectiveness of the method is illustrated in numerical exampl
es. (C) 1999 The Franklin Institute. Published by Elsevier Science Ltd.