SZABO, Attila T. “Observations Regarding the Spreading and Variability of Microrrhinum Species in Romania”. Notulae Botanicae Horti Agrobotanici Cluj-Napoca 13, no. 1 (August 5, 1983): 39–44. Accessed December 2, 2022. https://notulaebotanicae.ro/index.php/nbha/article/view/170.