High resolution in the soft x-ray range from a toroidal grating monochromator - Reich, T.; Hussain, Z.; Moler, E.; Blackwell, M.; Kaindl, G.; Shirley, D. A.; Howells, M. R. (American Institute of Physics (AIP), 1993)
http://dx.doi.org/10.1063/1.1143866
Keywords: U; ZN