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2. Hoogboom et al. 2009, “Surface modification for improvement of inline solar cell manufacture”, Photovoltaics International, 2nd Edition, 2009.
3. White paper [online]: http://www.mallbaker.com/micro/documents/ECN_Clean_white_paper.pdf.
4. S. Keipert, P. Wang, D. Borchert, S. Müller, L. Kühnemann, M. Rinio et al. , 23rd European Photovoltaic Solar Energy Conference, 1-5 September 2008, Valencia, Spain.
5. Minitab-14 Help file.