B. Liu et Ss. Cheng, NOTE ON A NONLINEAR DIFFERENCE EQUATION WITH PERIODIC COEFFICIENTS AND CONSTANT DELAYS, Applied mathematics letters, 11(5), 1998, pp. 39-43
A nonlinear difference equation with periodic coefficients and constan
t delays is considered in this note and an oscillation criterion is ob
tained. This criterion is obtained by means of a generalized character
istic equation. Published by Elsevier Science Ltd.