Rauscher, J. T. (2002). "Molecular phylogenetics of the Espeletia complex (Asteraceae): evidence from nrDNA ITS sequences on the closest relatives of an Andean adaptive radiation". American Journal of Botany. 89 (7): 1074–84. doi:10.3732/ajb.89.7.1074. PMID21665707.
Panero, Jose L.; Jansen, RK; Clevinger, JA (1999). "Phylogenetic Relationships of Subtribe Ecliptinae (Asteraceae: Heliantheae) Based on Chloroplast DNA Restriction Site Data". American Journal of Botany. 86 (3): 413–427. doi:10.2307/2656762. JSTOR2656762. PMID10077503.
Bekele, Endashaw; Geleta, Mulatu; Dagne, Kifle; Jones, Abigail L.; Barnes, Ian; Bradman, Neil; Thomas, Mark G. (2007). "Molecular phylogeny of genus Guizotia (Asteraceae) using DNA sequences derived from ITS". Genetic Resources and Crop Evolution. 54 (7): 1419. doi:10.1007/s10722-006-9126-0.
Panero, Jose L.; Jansen, RK; Clevinger, JA (1999). "Phylogenetic Relationships of Subtribe Ecliptinae (Asteraceae: Heliantheae) Based on Chloroplast DNA Restriction Site Data". American Journal of Botany. 86 (3): 413–427. doi:10.2307/2656762. JSTOR2656762. PMID10077503.
nih.gov
pubmed.ncbi.nlm.nih.gov
Rauscher, J. T. (2002). "Molecular phylogenetics of the Espeletia complex (Asteraceae): evidence from nrDNA ITS sequences on the closest relatives of an Andean adaptive radiation". American Journal of Botany. 89 (7): 1074–84. doi:10.3732/ajb.89.7.1074. PMID21665707.
Panero, Jose L.; Jansen, RK; Clevinger, JA (1999). "Phylogenetic Relationships of Subtribe Ecliptinae (Asteraceae: Heliantheae) Based on Chloroplast DNA Restriction Site Data". American Journal of Botany. 86 (3): 413–427. doi:10.2307/2656762. JSTOR2656762. PMID10077503.