1997 IUCN red list of threatened plants (1997)

Bulletin de la Société botanique de France - Centre national de la recherche scientifique (France) (La Société, 1874)

Bulletin de la Société botanique de France - Centre national de la recherche scientifique (France) (La Société, 1874)

An environmental profile of the Black Sea Coast - Gillett, Harriet J. (WCMC, 1997)

Flora Orientalis : sive, Enumeratio plantarum in Oriente a Graecia et Aegypto ad Indiae fines hucusque observatarum - Boissier, Edmond, 1810 -1885 (H. Georg, 1867)

Index to grass species - Smithsonian Institution (G. K. Hall, 1962)

Red list of the endemic plants of the Caucasus : Armenia, Azerbaijan, Georgia, Iran, Russia, and Turkey - Missouri Botanical Garden. (Missouri Botanical Garden Press, 2014)

Red list of the endemic plants of the Caucasus : Armenia, Azerbaijan, Georgia, Iran, Russia, and Turkey - Missouri Botanical Garden. (Missouri Botanical Garden Press, 2014)