1. Chater A. O.1968:Astragalus: 108–124. – In: Flora Europaea vol.2. – Cambridge.
2. Podlech D.1999:Astragalus: 279–338. – In: S. Talavera et al. (eds.) Flora Iberica vol.VII(I) Leguminosae partim. – Real Jardín Bot. CSIC Madrid.
3. Podlech D.1999–2007:Thesaurus Astragalorum: Index of all taxa within the genusAstragalusL. and other genera but belonging to the genusAstragalus.Taxa of the Old World and related taxa of the New World.http://www.botanik.biologie.uni‐muenchen.de/botsyst/theslit.html.
4. Systematic revision of Astragalus sect. Adiapastus, sect. Macrophyllium and sect. Pterophorus (Fabaceae);Zarre‐Mobarakeh Sh.;Englera,2000