Evolutionary Computation in Combinatorial Optimization 18th European Conference, EvoCOP 2018, Parma, Italy, April 4-6, 2018, Proceedings - Liefooghe, Arnaud; Liefooghe, Arnaud; López-Ibáñez, Manuel; López-Ibáñez, Manuel (Springer International Publishing : Imprint: Springer, 2018)