Classification and individualisation of black ballpoint pen inks using principal component analysis of UV–vis absorption spectra
2008 ◽
Vol 174
(1)
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pp. 16-25
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2012 ◽
Vol 57
(4)
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pp. 1087-1093
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1997 ◽
Vol 192
(1)
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pp. 83-93
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2015 ◽
Vol 70
(3)
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pp. 374-377
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2021 ◽
2016 ◽
Vol 50
(4)
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pp. 323-340
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1997 ◽
Vol 357
(8)
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pp. 1088-1092
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