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Figure 4
Results similar to those of Fig. 1[link], for 15th century religious writing on parchment, of Italian origin (image size 18 mm × 7 mm). The bottom part shows a comparison of two visible pictures of red and black ink characters and two X-ray absorption images below (recorded with a grating interferometer at TOMCAT, DPC mode, 25 keV, exposure time 80 ms) (Stampanoni et al., 2007BB33).

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 22| Part 2| March 2015| Pages 446-451
doi:10.1107/S1600577515000314
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