Jm. Ferreira et Am. Pedro, Spectral bounds and oscillations of a differential-difference system of neutral type, J DIFF EQUA, 168(1), 2000, pp. 168-179
This paper is concerned with the oscillatory behavior of a differential-dif
ference system of neutral type. Spectral bounds are used in order to obtain
sufficient conditions such that all their solutions are oscillatory. (C) 2
000 Academic Press.