Template:Marcussen et al., 2022
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- Marcussen, T., Ballard, H.E., Danihelka, J., Flores, A.R., Nicola, M.V. & Watson, J.M. 2022. A revised phylogenetic classification for Viola (Violaceae). Plants 11(17), p.2224. DOI: 10.3390/plants11172224