Montazerolghaem, S., Rahiminejad, M. R., Mozaffarian, V., & Susanna, A. (2016).

Taxonomic notes on the genus Echinops (Compositae, Cardueae–Echinopsinae) in Iran

. Phytotaxa, 263(2), 81–97. https://doi.org/10.11646/phytotaxa.263.2.1