M. A. Stevens, C. Downs, D. B. Emerson, J. H. Adler, S. P. MacLachlan, T.E. Vandervelde. Studying Anomalous Open-Circuit Voltage Drop-Out in Concentrated Photovoltaics Using Computational Numerical Analysis. Photovoltaic Specialists Conference (PVSC), 42nd IEEE, New Orleans, June 14-19, 2015. DOI: 10.1109/PVSC.2015.7356072.