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Raca et al 2020. Raca, Irena; Harpke, Dörte; Shuka, Lulëzim; Ranđelović, Vladimir (19 October 2020). "A new species of Crocus ser. Verni (Iridaceae) with 2 n = 12 chromosomes from the Balkans". Plant Biosystems. 156: 36–42. doi:10.1080/11263504.2020.1829735. S2CID225006706.