Amirabadi-zadeh, H., Abbassi, M. & Ranjbar, M. 2007: A new species of Onobrychis sect. Heliobrychis (tribe Hedysareae) from Iran. -The Iranian Journal of Botany, 13 (1): 53-56.
Assadi M. 1989: Plan of the Flora of Iran. −Research Institute of Forests and Rangelands. Tehran.
Boissier, E. 1872: Hedysarum and Onobrychis in Flora Orientalis, vol. 2: 511-553. –Geneva, Basilease and Lugundi.
Choi, B. H. & Ohashi, H. 1996: Pollen morphology and taxonomy of Hedysarum and its related genera of the tribe Hedysareae (Leguminoseae- Papilionoideae). -Journal of Japanese Botany 71: 191-213
Choi, B. H. & Ohashi, H. 2003: Generic criteria and an infrageneric system for Hedysarum and related genera (Papilionoideae-Leguminosae). –Taxon, 52: 567-576.
Fedtschenko B. A. & Grossheim A. A. 1948: Hedysarum and Onobrychis in Komarov, V. L. et al. (eds), Flora of the U.S.S.R., vol 13: 199-281. -Moscow, Leningrad.
Hedge I. C. 1970: Onobrychis in Flora of Turkey and the East Aegean Islands, vol. 3: 560-589. –Edinburgh University Press.
Rechinger, K. H. 1984: Hedysareae in Rechinger, K. H (ed.), Flora Iranica, no.157: 365-469. –Graz.
Sirjaev, G. 1926, "Onobrychis generis revisio critica", -publication de la faculte' des sciences de L'Universite Masaryk (Brno) 76: 1-165.
Townsend C. C. 1974: Onobrychis in Flora of Iraq, vol. 3: 471-493. –Published by the Ministry of Agriculture of the Republic of Iraq, Baghdad.
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