Garcia, S.; Sanz, M.; Garnatje, T.; Kreitschitz, A.; McArthur, E.D.; Valles, J. 2004. Variation of DNA amount in 47 populations of the subtribe Artemisiinae and related taxa (Asteraceae, Anthemideae): Karyological, ecological, and systematic implications. Genome. 47(6): 1004-1014.