used for the experimental study for the Special Issue of Soft Computing on Scalability of
Evolutionary Algorithms and other Metaheuristics for Large Scale Continuous Optimization
Problems. In Section 1 (page 2), we report the main features and properties of the functions
F1-F11 and, in Section 2 (page 10), we explain the way hybrid composition functions F12-
F19* are obtained combining two functions belonging to the set F1-F11.