Ea. Stern, NUMBER OF RELEVANT INDEPENDENT POINTS IN X-RAY-ABSORPTION FINE-STRUCTURE SPECTRA, Physical review. B, Condensed matter, 48(13), 1993, pp. 9825-9827
A discussion is given of the amount of information present in x-ray-ab
sorption fine-structure spectra. It is shown that the usual formulatio
ns underestimate the degrees of freedom by at least one.