Using the Riccati transformation techniques, we will extend some oscillation criteria of [Appl. Math. Comput. 146 (2003) 791] and [Appl. Math. Comput. 142 (2003) 99] to the second-order nonlinear neutral delay difference equation@D(a"n(@D(x"n+p"nx"n"-"@t))^@c)+f(n,x"n"-"@s)=0,n=0,1,2,...in the case when 0<@c<1, which answers a question posed by Saker [Appl. Math. Comput. 142 (2003) 99]. Two examples are considered to illustrate our main results.
['Yalei Sun', 'S. H. Saker']
Oscillation for second-order nonlinear neutral delay difference equations