Scientific articles
José M. Amigó, & Osvaldo A. Rosso (2023). Ordinal methods: Concepts, applications, new developments, and challenges—In memory of Karsten Keller (1961–2022). Chaos: An Interdisciplinary Journal of Nonlinear Science, 33.
José María Amigó (Operations Research Center, University Miguel Hernández of Elche) and Osvaldo A. Rosso (Instituto de Física, Universidade Federal de Alagoas (UFAL) and Instituto de Física (IFLP), Universidad Nacional de la Plata)