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Casal, S.; Fernandes, J.O.; Oliveira, M.B.P.P.; Ferreira, M.A., Gas chromatographic-mass spectrometric quantification of 4-(5-)-methylimidazole in roasted coffee after ion-pair extraction, J. Chromatogr. A, 2002, 976, 1-2, 285-291, https://doi.org/10.1016/S0021-9673(02)01154-8 . [all data]

Casal, S.; Beatriz Oliveira, M.; Ferreira, M.A., Gas chromatographic quantification of amino acid enantiomers in food matrices by their N(O,S)-ethoxycarbonyl heptafluorobutyl ester derivatives, J. Chromatogr. A, 2000, 866, 2, 221-230, https://doi.org/10.1016/S0021-9673(99)01105-X . [all data]

Silva, B.M.; Casal, S.; Andrade, P.B.; Seabra, R.M.; Oliveira, M.B.P.P.; Ferreira, M.A., Free amino acid composition of quince (Cydonia oblonga Miller) fruit (pulp and peel) and jam, J. Agric. Food Chem., 2004, 52, 5, 1201-1206, https://doi.org/10.1021/jf030564x . [all data]

Casal, S.; Mendes, E$.; Fernandes, J.O.; Oliveira, M.B.P.P.; Ferreira, M.A., Analysis of heterocyclic aromatic amines in foods by gas chromatography-mass spectrometry as their tert.-butyldimethylsilyl derivatives, J. Chromatogr. A, 2004, 1040, 1, 105-114, https://doi.org/10.1016/j.chroma.2004.03.054 . [all data]