Kjempeslekta i Artsdatabanken. Besøkt 23. desember 2020.
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ww2.bgbm.org
K. Marhold (2011). «Plantago». Euro+Med Plantbase – the information resource for Euro-Mediterranean plant diversity. Besøkt 20. desember 2020.
denvirtuellafloran.se
«Kämpar». Den virtuella floran. Arkivert fra originalen 12. juli 2022. Besøkt 20. desember 2020.
doi.org
N. Iwanycki Ahlstrand m.fl. (2019). «Ancestral range reconstruction of remote oceanic island species of Plantago (Plantaginaceae) reveals differing scales and modes of dispersal». Journal of Biogeography. 46 (4): 706–722. ISSN1365-2699. doi:10.1111/jbi.13525.
N. Rønsted m.fl. (2002). «Phylogenetic relationships within Plantago (Plantaginaceae): evidence from nuclear ribosomal ITS and plastid trnL-F sequence data». Botanical Journal of the Linnean Society. 139 (4): 323–338. ISSN1095-8339. doi:10.1046/j.1095-8339.2002.00070.x.
G. Hassemer m.fl. (2019). «The application of high-throughput sequencing for taxonomy: the case of Plantago subg. Plantago (Plantaginaceae)». Molecular Phylogenetics and Evolution. 138: 156–173. ISSN1055-7903. PMID31112781. doi:10.1016/j.ympev.2019.05.013.
efloras.org
«Plantago». Flora of China. Besøkt 20. desember 2020.
nih.gov
ncbi.nlm.nih.gov
G. Hassemer m.fl. (2019). «The application of high-throughput sequencing for taxonomy: the case of Plantago subg. Plantago (Plantaginaceae)». Molecular Phylogenetics and Evolution. 138: 156–173. ISSN1055-7903. PMID31112781. doi:10.1016/j.ympev.2019.05.013.
plantsoftheworldonline.org
«Plantago». Plants of the World Online. Kew Science. Besøkt 23. desember 2020.
web.archive.org
«Kämpar». Den virtuella floran. Arkivert fra originalen 12. juli 2022. Besøkt 20. desember 2020.
worldcat.org
N. Iwanycki Ahlstrand m.fl. (2019). «Ancestral range reconstruction of remote oceanic island species of Plantago (Plantaginaceae) reveals differing scales and modes of dispersal». Journal of Biogeography. 46 (4): 706–722. ISSN1365-2699. doi:10.1111/jbi.13525.
N. Rønsted m.fl. (2002). «Phylogenetic relationships within Plantago (Plantaginaceae): evidence from nuclear ribosomal ITS and plastid trnL-F sequence data». Botanical Journal of the Linnean Society. 139 (4): 323–338. ISSN1095-8339. doi:10.1046/j.1095-8339.2002.00070.x.
G. Hassemer m.fl. (2019). «The application of high-throughput sequencing for taxonomy: the case of Plantago subg. Plantago (Plantaginaceae)». Molecular Phylogenetics and Evolution. 138: 156–173. ISSN1055-7903. PMID31112781. doi:10.1016/j.ympev.2019.05.013.