María J. Blesa Aguilera, Christian Blum, Haroldo Gambini Santos, Pedro Pinacho Davidson, Julio Godoy del Campo: Hybrid Metaheuristics - 11th International Workshop, HM 2019, Concepción, Chile, January 16-18, 2019, Proceedings. Lecture Notes in Computer Science 11299, Springer 2019, ISBN 978-3-030-05982-8