2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/80370We review work on the Discrete Nonlinear Schrödinger (DNLS) equation over the last two decades.24 pages, 1 figure, Proceedings of the conference on "Localization and Energy Transfer in Nonlinear Systems", June 17-21, 2002, San Lorenzo de El Escorial, Madrid, Spain; to be published by World ScientificPattern Formation and SolitonsCondensed MatterChaotic DynamicsOpticsThe Discrete Nonlinear Schrödinger equation - 20 Years ontext