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P.L. Ascough et al. (2010): Charcoal reflectance measurements: implications for structural characterization and assessment of diagenetic alteration. PDF file, Journal of Archaeological Science. About charcoal, reflectance, Raman spectroscopic measurements, oxidative degradation, black carbon, diagenesis.

A.F. Bunkin et al. (2023): Fossil Plant Remains Diagnostics by Laser-Induced Fluorescence and Raman Spectroscopies. Free access, Photonics, 10.
"... Our results demonstrated that combined laser-induced fluorescence and Raman spectroscopy measurements can provide new insights into the detection of samples with biogenicity indicators such as chlorophyll and its derivatives, as well as kerogenous materials. ..."

F.E. de Sousa Filho et al. (2011): Combination of Raman, Infrared, and X-Ray Energy-Dispersion Spectroscopies and X-Ray Diffraction to Study a Fossilization Process. In PDF, Braz. J. Phys., 41: 275-280.

D.G. Henry et al. (2019): Raman spectroscopy as a tool to determine the thermal maturity of organic matter: Application to sedimentary, metamorphic and structural geology. Free access, Earth-Science Reviews, 198.

! J.A. Heredia-Guerrero et al. (2014): Infrared and Raman spectroscopic features of plant cuticles: a review. Free access, Front. Plant Sci., 25.
Note table 2: Definition of semi-quantitative ratios from FTIR and their interpretation for the characterization of fossilized plant cuticles (adapted from Zodrow etal. 2012).