Maroofi, H., & Rastegar, A. (2017).

Tragopogon erostris Boiss. & Hausskn. (Asteraceae: Cichorieae, Scorzonerinae), the correct name for T. maroofii Mahmoodi & Safavi and T. kurdicus Safavi & Maroofi

. Phytotaxa, 302(3), 294–297. https://doi.org/10.11646/phytotaxa.302.3.11