MUNTEAN, Leon Sorin, Alexandru SALONTAI, Solovastru CERNEA, Constantin BOTEZ, Mircea TAMAS, Gavrila MORAR, Felicia VAIDA, Dan VARBAN, and Maria PARV. 1996. “Research on the Biology of Oenothera Biennis L. Species”. Notulae Botanicae Horti Agrobotanici Cluj-Napoca 26 (1):41-45. https://doi.org/10.15835/nbha261287.