Invertibility conditions for the nonlinear difference operator $(Dx)(n) = x(n+1) - f(x(n))$ in the space $l_{\infty}({\mathbb{Z}},\mathbb{R})$. НК [Internet]. 2006 Jun. 29 [cited 2026 Jan. 21];9(2):244-63. Available from: https://twinhead.imath.kiev.ua/index.php/nosc/article/view/395