The following represents an incomplete list of items about anomalous, or resonance, small angle x-ray scattering, with an emphasis on biological systems (proteins).
Resources 2002
"SASSIM: a method for calculating small-angle X-ray and neutron scattering and the associated molecular envelope from explicit-atom models of solvated proteins," F. Merzel and J. C. Smith, Acta Cryst D 58:242-249.
1981
Configuration of the Four Iron Atoms in Dissolved Human Hemoglobin as Studied by Anomalous Dispersion," H. B. Stuhrmann and H. Notbohm PNAS 78 6216-6220.