Maloupa, Eleni, and Nikos Krigas. 2008. “The Balkan Botanic Garden of Kroussia, Northern Greece : : A Garden Dedicated to the Conservation of the Native Plants of Greece and The Balkans”. Sibbaldia: The International Journal of Botanic Garden Horticulture, no. 6 (October): 9-27. https://doi.org/10.24823/Sibbaldia.2008.33.