Lopez-Garcia, J.; Xie, H.; Izquierdo-Roca, V.; Sylla, D.; Fontane, X.; Blanes-Guardia, M.; Ramos, F.; Espindola-Rodriguez, M.; Lopez-Marino, S.; Saucedo, E.; Perez-Rodriguez, A. "Synthesis of CuIn(S,Se)2 quaternary alloys by screen printing and selenization-sulfurization sequential steps: Development of composition graded absorbers for low cost photovoltaic devices" Materials Chemistry and Physics 160, pp. 237 - 243. 2015 DOI: 10.1016/j.matchemphys.2015.04.030