Measurement Invariance of the Day Reconstruction Method: Results from the COURAGE in Europe Project - Mellor-Marsa, Blanca; Miret, Marta; Abad, Francisco J.; Chatterji, Somnath; Olaya, Beatriz; Tobiasz-Adamczyk, Beata; Koskinen, Seppo; Leonardi, Matilde; Maria Haro, Josep; Luis Ayuso-Mateos, Jose; Felix Caballero, Francisco; (Journal Of Happiness Studies, 2016)