Nelson, W. (1980). "Accelerated Life Testing - Step-Stress Models and Data Analyses". IEEE Transactions on Reliability (2): 103. doi:10.1109/TR.1980.5220742. S2CID35734439.
Herrmann, W.; Bogdanski, N. (2011-06-01). "Outdoor weathering of PV modules — Effects of various climates and comparison with accelerated laboratory testing". 2011 37th IEEE Photovoltaic Specialists Conference. pp. 002305–002311. doi:10.1109/PVSC.2011.6186415. ISBN978-1-4244-9965-6. S2CID20511202.
Nelson, W. (1980). "Accelerated Life Testing - Step-Stress Models and Data Analyses". IEEE Transactions on Reliability (2): 103. doi:10.1109/TR.1980.5220742. S2CID35734439.
Herrmann, W.; Bogdanski, N. (2011-06-01). "Outdoor weathering of PV modules — Effects of various climates and comparison with accelerated laboratory testing". 2011 37th IEEE Photovoltaic Specialists Conference. pp. 002305–002311. doi:10.1109/PVSC.2011.6186415. ISBN978-1-4244-9965-6. S2CID20511202.