Non-Destructive Discrimination of Blue Inks on Suspected Documents through the Combination of Raman Spectroscopy and Chemometric Analysis by Sruthi Thiraviam Saravanan, Jaysiva Ganesamurthi, Shen-Ming Chen, Tse-Wei Chen, Chun-Jung Chen, Keseven Lakshmanan, Partheeban Chinnamuthu, Xiaoheng Liu, Ramachandran Balaji

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