Analysis of Indian blue ballpoint pen inks tagged with rare-earth thenoyltrifluoroacetonates by inductively coupled plasma–mass spectrometry and instrumental neutron activation analysis

2006 ◽  
Vol 159 (1) ◽  
pp. 32-42 ◽  
Author(s):  
S.D. Maind ◽  
S.A. Kumar ◽  
N. Chattopadhyay ◽  
Ch. Gandhi ◽  
M. Sudersanan
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