Source Determination of Red Gel Pen Inks using Raman Spectroscopy and Attenuated Total Reflectance Fourier Transform Infrared Spectroscopy combined with Pearson's Product Moment Correlation Coefficients and Principal Component Analysis

2017 ◽  
Vol 63 (1) ◽  
pp. 285-291 ◽  
Author(s):  
Muhammad Naeim Mohamad Asri ◽  
Wan Nur Syuhaila Mat Desa ◽  
Dzulkiflee Ismail
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