Schulz, U., Munzert, P., Präfke, C., Rickelt, F. and Kaiser, N. 2013. Wide-angle broadband AR coating by combining interference layers with a plasma-etched gradient layer. International Conference on Plasma Surface Engineering. 2, 13 (Mar. 2013), 181–183. DOI:https://doi.org/10.3384/wcc2.181-183.