Maloupa, Eleni, and Nikos Krigas. “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, Oct. 2008, pp. 9-27, doi:10.24823/Sibbaldia.2008.33.