Research & Education JFS Articles AAFS Connect Conference Proceedings Reference Series Library International Educational Outreach Program Raman Spectroscopy of Blue Ballpoint Pen Inks and Dyes Found in Inks: Investigation of the Effects of Varying Laser Wavelength Presenting section: Questioned Documents 2011 Yiwen, Luo, ShangHai CHINA; Che, Xu, ShangHai CHINA; Xu, Yang, ShangHai CHINA; Qiran, Sun, ShangHai CHINA View the paper Questioned Documents