Norouzi, Maryam, 		Ghahremaninejad, Farrokh, 		Asghar Maassoumi, Ali, AND 		Reza Safavi, Seyed.
" Anatomical studies on Scorzonera (Asteraceae) species, subgenera Podospermum and Pseudopodospermum in Iran" <em>Modern Phytomorphology</em> [Online], Volume 9(1 June 2016)