CORNEANU, Gabriel C., M. POPESCU, A. SITORIS, V. D. SIMEANU, and G. POPESCU. 1986. “Researches Concerning the Biology of the Nigella L. Species (Fam. Ranunculaceae) from Romania”. Notulae Botanicae Horti Agrobotanici Cluj-Napoca 16 (1), 151-63. https://doi.org/10.15835/nbha161222.