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