Improving Poor Man's Kramers-Kronig analysis and Kramers-Kronig constrained variational analysis.We report a considerable improvement of Poor Man's Kramers-Kronig analysis and Kramers-Kronig constrained variational analysis.  This puts Poor Man's Kramers-Kronig analysis in the range of Maclaurin's method, which is still one of the numerical benchmarks. 
Poor Man's Kramers-Kronig
Improving Poor Man's Kramers-Kronig analysis and Kramers-Kronig constrained variational analysis.We report a considerable improvement of Poor Man's Kramers-Kronig analysis and Kramers-Kronig constrained variational analysis.  Kramers-Kronig constrained variational analysis on the other hand can now unleash its full potential and is able to correctly model even spectra of inorganic materials with their strong absorption bands without being supported by conventional oscillators.
Kramers-Kronig constrained variational analysis