Corrigendum to "Energetic and economic optimization of the yearly performance of three different solar assisted heat pump systems using a mixed integer linear programming algorithm" [Energy Convers. Manage. 206 (2020) 1–16 112446]. (1st June 2020) - Simonetti, Riccardo; Moretti, Luca; Molinaroli, Luca; Manzolini, Giampaolo