1. A round robin study of flexible large-area roll-to-roll processed polymer solar cell modules;Krebs;Sol. Energy Mater. Sol. Cells,2009
2. Results of the 1984/1985 international round robin calibration summit working group on technology, growth and employment;Ossenbrink;IEEE,1985
3. J. Metzdorf, T. Wittchen, K. Heidler, K. Dehne, R. Shimokawa, F. Nagamine, H. Ossenbrink, L. Fornarini, C. Goodbody, M. Davies, K. Emery, R. Deblasio, Objectives and results of the PEP '87 round-robin calibration of reference cells and modules, in: Proc. 21st IEEE Photovoltaic Specialists Conf., Orlando, FL, IEEE, New York, May 21–25, 1990. (1990) 952–959.
4. J. Metzdorf, T. Wittchen, K. Heidler, K. Dehne, R. Shimokawa, F. Nagamine, H. Ossenbrink, L. Fornarini, C. Goodbody, M. Davies, K. Emery, R. Deblasio, The results of the PEP '87 round-robin calibration of reference cells and modules, final report PTB technical report PTB-Opt-31, Braunschweig, Germany, November 1990, ISBN 3-89429-067-6.
5. C.R. Osterwald, S. Anevsky, A.K. Barua, J. Dubard, K. Emery, D. King, J. Metzdorf, F. Nagamine, R. Shimokawa, N. Udayakumar, Y.X. Wang, W. Zaaiman, A. Zastrow, J. Zhang, Results of the PEP ‘93 intercomparison of reference cell calibrations and newer technology performance measurements, in: Proc. 25th IEEE Photovoltaic Specialists Conf., Washington D.C., IEEE, New York, May 13–17, 1996. (1996) 1263–1266.