Pelc, Sandra E.; Couillard, David M.; Stansell, Zachary J.; Farnham, Mark W. (2015). “Genetic Diversity and Population Structure of Collard Landraces and their Relationship to Other Brassica oleracea Crops”. The Plant Genome8 (3): eplantgenome2015.04.0023. doi:10.3835/plantgenome2015.04.0023. ISSN1940-3372. PMID33228266.
Zietz, Michaela; Weckmüller, Annika; Schmidt, Susanne; Rohn, Sascha; Schreiner, Monika; Krumbein, A; Kroh, Lothar W (2010). “Genotypic and Climatic Influence on the Antioxidant Activity of Flavonoids in Kale (Brassica oleracea var. sabellica)”. Journal of Agricultural and Food Chemistry58 (4): 2123-2130. doi:10.1021/jf9033909. PMID20095605.
Armesto, Jorge; Gómez-Limia, Lucía; Carballo, Javier; Martínez, Sidonia (23 July 2018). “Effects of different cooking methods on the antioxidant capacity and flavonoid, organic acid and mineral contents of Galega kale (Brassica oleracea var. acephala cv. Galega)”. International Journal of Food Sciences and Nutrition70 (2): 136-149. doi:10.1080/09637486.2018.1482530. ISSN0963-7486. PMID30037287.
Korus, Anna; Lisiewska, Zofia (2011). “Effect of preliminary processing and method of preservation on the content of selected antioxidative compounds in kale (Brassica oleracea L. var. acephala) leaves”. Food Chemistry129 (1): 149-154. doi:10.1016/j.foodchem.2011.04.048.
Pelc, Sandra E.; Couillard, David M.; Stansell, Zachary J.; Farnham, Mark W. (2015). “Genetic Diversity and Population Structure of Collard Landraces and their Relationship to Other Brassica oleracea Crops”. The Plant Genome8 (3): eplantgenome2015.04.0023. doi:10.3835/plantgenome2015.04.0023. ISSN1940-3372. PMID33228266.
Zietz, Michaela; Weckmüller, Annika; Schmidt, Susanne; Rohn, Sascha; Schreiner, Monika; Krumbein, A; Kroh, Lothar W (2010). “Genotypic and Climatic Influence on the Antioxidant Activity of Flavonoids in Kale (Brassica oleracea var. sabellica)”. Journal of Agricultural and Food Chemistry58 (4): 2123-2130. doi:10.1021/jf9033909. PMID20095605.
Armesto, Jorge; Gómez-Limia, Lucía; Carballo, Javier; Martínez, Sidonia (23 July 2018). “Effects of different cooking methods on the antioxidant capacity and flavonoid, organic acid and mineral contents of Galega kale (Brassica oleracea var. acephala cv. Galega)”. International Journal of Food Sciences and Nutrition70 (2): 136-149. doi:10.1080/09637486.2018.1482530. ISSN0963-7486. PMID30037287.
Pelc, Sandra E.; Couillard, David M.; Stansell, Zachary J.; Farnham, Mark W. (2015). “Genetic Diversity and Population Structure of Collard Landraces and their Relationship to Other Brassica oleracea Crops”. The Plant Genome8 (3): eplantgenome2015.04.0023. doi:10.3835/plantgenome2015.04.0023. ISSN1940-3372. PMID33228266.
Armesto, Jorge; Gómez-Limia, Lucía; Carballo, Javier; Martínez, Sidonia (23 July 2018). “Effects of different cooking methods on the antioxidant capacity and flavonoid, organic acid and mineral contents of Galega kale (Brassica oleracea var. acephala cv. Galega)”. International Journal of Food Sciences and Nutrition70 (2): 136-149. doi:10.1080/09637486.2018.1482530. ISSN0963-7486. PMID30037287.