Reference 22

L. I. Goray, “Off-plane grazing-incidence fan-groove blazed grating to serve as a high-efficiency spectral purity filter for EUV lithography,” in Advances in X-Ray/EUV Optics, Components, and Applications, A. M. Khounsary and C. Morawe, eds., SPIE Proc., vol. 6317, 2006., pp. 0O-1-9.


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