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Sumathykutty, M.A.; Rao, J.M.; Padmakumari, K.P.; Narayanan, C.S., Essential oil constituents of some Piper species, Flavour Fragr. J., 1999, 14, 5, 279-282, https://doi.org/10.1002/(SICI)1099-1026(199909/10)14:5<279::AID-FFJ821>3.0.CO;2-0 . [all data]