M Migda,
J Migda - Mathematical and computer modelling, 2004 - Elsevier
The first-order nonlinear difference equations of neutral type where δ=±1, N (n0)={n0, n0+
1,}, p, qj: N (n0)→ R+, τ, σj: N (n0)→ N, and limn→∞ τ (n)= limn→∞ σj (n)=∞, ƒj: R→ R, j= 1 …