Barneby, C. 1974: Dragma Hippomanicum. I. -Brrittonia 26: 109-114.
Lock, J. & Simpson, K. 1991: Legumes of West Asia, a Check-list. -Royal Botanic Gardens Publication, London.
Maassoumi, A. A. 1998: Astragalus of the Old World, a checklist. -Research Institute of Forests and Rangelands Publication, Tehran, Iran.
Podlech, D., Zarre, Sh., Maassoumi, A. A., Ekici, M. & Sytin, A. 2010: Papilionaceae VI in Rechinger K. H. Flora Iranica no. 178. -Akademische druck-u. verlagsanstalt, Gruz-Austria.