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Simultaneous determination of methylxanthines in coffees and teas by UV-Vis spectrophotometry and partial least squares
Leticia López-Martínez, Pedro Luis López-de-Alba, Rosalinda García-Campos and Luis M. De León-Rodríguez
Analytica Chimica Acta
Volume 493, Issue 1, 23 September 2003, Pages 83-94
- DOI:
http://dx.doi.org/doi:10.1016/S0003-2670(03)00862-6