2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/29359Three types of nonlinear Schrodinger models with multiple length scales are considered. It is shown that the length-scale competition universally results into arising of new localized stationary states. Multistability phenomena with a controlled switching between stable states become possible.16 pages, 8 figures, chapter for the Springer book "Nonlinear Science at the dawn of the 21th century" (2000)Soft Condensed MatterDisordered Systems and Neural Networkstext