1.
Zajdel SM, Głowniak K. Penstemon – a short characteristic of the genus with a special consideration of its chemical composition and a role in ethnomedicine. Curr. Issues Pharm. Med. Sci. [Internet]. 2012 Jan. 9 [cited 2025 Jun. 8];24(2):141-6. Available from: https://czasopisma.umlub.pl/curipms/article/view/3015