PUIA, I.; SZABO, A. T. Experimental cultivation of a new forage species - Silphium perfoliatum L. - in the Agrobotanical Garden from Cluj-Napoca. Notulae Botanicae Horti Agrobotanici Cluj-Napoca, [S. l.], v. 15, n. 1, p. 15–20, 1985. DOI: 10.15835/nbha151201. Disponível em: https://www.notulaebotanicae.ro/index.php/nbha/article/view/201. Acesso em: 13 aug. 2022.