2 literature references for Astragalus hamosus subsp. verus Emb. & Maire:

Author: Greuter,W. et al. (Eds.)
Year: 1989
Title:
Source: Med-Checklist Vol.4 (published)
Author: Podlech,D.
Year: 1996
Title:
Source: Comments on Galegeae - European. Report produced for ILDIS.