Tang, F; Tao, L; Luo, X; Ding, L; Guo, M; Nie, L; Yao, S (2006). „Determination of octopamine, synephrine and tyramine in Citrus herbs by ionic liquid improved 'green' chromatography”. Journal of chromatography. A. 1125 (2): 182—8. PMID16781718. doi:10.1016/j.chroma.2006.05.049.
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Tang, F; Tao, L; Luo, X; Ding, L; Guo, M; Nie, L; Yao, S (2006). „Determination of octopamine, synephrine and tyramine in Citrus herbs by ionic liquid improved 'green' chromatography”. Journal of chromatography. A. 1125 (2): 182—8. PMID16781718. doi:10.1016/j.chroma.2006.05.049.
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