New method for caffeine quantification by planar chromatography coupled with electropray ionization mass spectrometry using stable isotope dilution analysis
2007 ◽
Vol 21
(7)
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pp. 1297-1303
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1984 ◽
Vol 318
(6)
◽
pp. 398-401
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1989 ◽
Vol 18
(7)
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pp. 471-477
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1983 ◽
Vol 315
(1)
◽
pp. 30-33
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1995 ◽
Vol 708
(2)
◽
pp. 303-307
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2003 ◽
Vol 17
(24)
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pp. 2833-2838
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2009 ◽
Vol 92
(3)
◽
pp. 730-733
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