PANFIL, Costica, Mircea SAVATTI, and M. RUHRIG. “The "Napoca-Tetra" Red Clover Variety”. Notulae Botanicae Horti Agrobotanici Cluj-Napoca 8, no. 1 (August 5, 1975): 45-46. Accessed December 5, 2020. https://notulaebotanicae.ro/index.php/nbha/article/view/53.