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Shimizu, Y.; Imayoshi, Y.; Kato, M.; Maeda, K.; Iwabuchi, H.; Shimomura, K., Volatiles from leaves of field-grown plants and shoot cultures of Gynura bicolor DC, Flavour Fragr. J., 2009, 24, 5, 251-258, https://doi.org/10.1002/ffj.1938 . [all data]