Schöppe, P., Gurieva, G., Giraldo, S., Martínez-Criado, G., Ronning, C., Saucedo, E., Schorr, S., Schnohr, C.S. "Discrepancy between integral and local composition in off-stoichiometric Cu2ZnSnSe4kesterites: A pitfall for classification" Applied Physics Letters 110, 4, pp. - 2017 DOI: 10.1063/1.4974819