RANJBAR, M.; NEGARESH, K. Taxonomic notes on the Psephellus zuvandicus group (Asteraceae) from Iran. Phytotaxa, Auckland, New Zealand, v. 170, n. 3, p. 199–206, 2014. DOI: 10.11646/phytotaxa.170.3.5. Disponível em: https://phytotaxa.mapress.com/pt/article/view/phytotaxa.170.3.5. Acesso em: 6 dec. 2025.