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Bougatsos, C.; Meyer, J.J.M.; Magiatis, P.; Vagias, C.; Chinou, I.B., Composition and antimicrobial activity of the essential oils of Helichrysum kraussii Sch. Bip. and H. rugulosum Less. from south Africa, Flavour Fragr. J., 2003, 18, 1, 48-51, https://doi.org/10.1002/ffj.1152 . [all data]