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Lucero, M.E.; Fredrickson, E.L.; Estell, R.E.; Morrison, A.A.; Richman, D.B., Volatile Composition of Gutierrezia sarothrae (Broom Snakeweed) as Determined by Steam Distillation and Solid Phase Microextraction, J. Essent. Oil Res., 2006, 18, 2, 121-125, https://doi.org/10.1080/10412905.2006.9699039 . [all data]