Norouzi, M., 		Ghahremaninejad, F., 		Asghar Maassoumi, A., & 		Reza Safavi, S.
(2016).
 Anatomical studies on Scorzonera (Asteraceae) species, subgenera Podospermum and Pseudopodospermum in Iran.
<em>Modern Phytomorphology, 9</em>, 51-68.
doi:10.5281/zenodo.159694