Caballero, R.; J.M.Cano-Torres, J.M.; Garcia-Llamas, E.; Fontane, X.; Perez-Rodriguez, A.; Greiner, D.; Kaufmann, C.A.; Merino, J.M.; Victorov, I.; Baraldi, G.; Valakh, M.; Bodnar I.; Izquierdo-Roca, V.; Leon, M. "Towards the growth of Cu2ZnSn1-xGexS4 thin films by a single-stage process: Effect of substrate temperature and composition" Solar Energy Materials and Solar Cells 139, pp. 1 - 9. 2015