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Semerdjieva, Ivanka, Galya Petrova, Elina Yankova-Tsvetkova, Tsvetelina Doncheva, Nadezhda Kostova, Rozalia Nikolova, and Valtcho D. Zheljazkov. "Genetic Diversity, Reproductive Capacity and Alkaloids Content in Three Endemic Alkanna Species." PLoS One 2020.

Semerdjieva, Ivanka, et al. "Genetic Diversity, Reproductive Capacity and Alkaloids Content in Three Endemic Alkanna Species." PLoS One 2020.