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\bibitem{Brammertz_etal2015} {\textquotedblleft}\textit{Process variability in Cu2ZnSnSe4 solar cell devices: Electrical and structural investigations}{\textquotedblright}. Brammertz G, Buffiere M, Verbist C, Bekaert J, Batuk M, Hadermann J, et al, The conference record of the IEEE Photovoltaic Specialists Conference
T2 -- IEEE 42nd Photovoltaic Specialist Conference (PVSC), JUN 14-19, 2015, New Orleans, LA  (2015)

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