Lopez-Marino, S.; Neuschitzer, M.; Sanchez, Y.; Fairbrother, A.; Espindola-Rodriguez, M.; Lopez-Garcia, J.; Placidi, M.; Calvo-Barrio, L.; Perez-Rodriguez, A.; Saucedo, E. "Earth-abundant absorber based solar cells onto low weight stainless steel substrate" Solar Energy Materials and Solar Cells 130, pp. 347 - 353. 2014 DOI: 10.1016/j.solmat.2014.07.030