%0 Journal Article %T Comment on the paper “Improving Poor Man’s Kramers-Kronig analysis and Kramers-Kronig constrained variational analysis” %+ Laboratoire Charles Coulomb (L2C) %A Rousseau, Emmanuel %A Izard, Nicolas %A Bantignies, Jean-Louis %A Felbacq, Didier %< avec comité de lecture %@ 1386-1425 %J Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy [1994-...] %I Elsevier %V 259 %P 119849 %8 2021-10 %D 2021 %R 10.1016/j.saa.2021.119849 %Z Physics [physics] %Z Physics [physics]/Physics [physics]/Optics [physics.optics]Journal articles %X We clarify some analytical expressions existing in the literature, • Within the correct formulae we conclude that there is no need for an ad hoc improvement on the opposite to the title paper, • We highlight the symmetry properties of the function to be integrated in order to agree with the usual assumptions made to derive the Kramers-Kronig relations, • The analytical formula we provide may be used to increase the accuracy of the "Poor Man's Kramers-Kronig analysis" method and the "Kramers-Kronig constrained variational analysis" method. %G English %2 https://hal.science/hal-03228703/document %2 https://hal.science/hal-03228703/file/Comment_Poor_Man_after_rev_V04_ready.pdf %L hal-03228703 %U https://hal.science/hal-03228703 %~ CNRS %~ L2C %~ MIPS %~ UNIV-MONTPELLIER %~ UM-2015-2021