Bell. S.E., et al. "Identification of Dyes on Ancient Chinese Paper Samples Using the Subtracted Shifted Raman Spectroscopy Method." Analytical Chemistry 72/1 (2000): 234-239.

Bell. S.E., et al. "Identification of Dyes on Ancient Chinese Paper Samples Using the Subtracted Shifted Raman Spectroscopy Method." Analytical Chemistry 72/1 (2000): 234-239.