KNÜPPEL, Michael. Zu neu-pers. اشك گل – Fritillaria imperialis ~ F. kurdica ~ F. persica. Folia Orientalia, [S. l.], v. 54, p. 335–336, 2026. Disponível em: https://wydawnictwo.pan.pl/index.php/fo/article/view/6774. Acesso em: 8 oct. 2026.