Santos, A.; Fidalgo F.; Santos I.; Salema R. (2002). "In vitro bulb formation of Narcissus asturiensis, a threatened species of the Amaryllidaceae". Journal of Horticultural Science & Biotechnology. 77 (2): 149–152. Bibcode:2002JHSB...77..149S. doi:10.1080/14620316.2002.11511471. S2CID87286906.
Santos, A.; Fidalgo F.; Santos I.; Salema R. (2002). "In vitro bulb formation of Narcissus asturiensis, a threatened species of the Amaryllidaceae". Journal of Horticultural Science & Biotechnology. 77 (2): 149–152. Bibcode:2002JHSB...77..149S. doi:10.1080/14620316.2002.11511471. S2CID87286906.
Santos, A.; Fidalgo F.; Santos I.; Salema R. (2002). "In vitro bulb formation of Narcissus asturiensis, a threatened species of the Amaryllidaceae". Journal of Horticultural Science & Biotechnology. 77 (2): 149–152. Bibcode:2002JHSB...77..149S. doi:10.1080/14620316.2002.11511471. S2CID87286906.