Feoktistov, D. S., and I. I. Gureyeva. “The Ultrastructure of Epidermal Surface of Stem and Branch Internods and Spores of Horsetails of Subgenus Equisetum (Equisetum L., Equisetaceae)”. Turczaninowia, Vol. 19, no. 1, 1, pp. 47–57, doi:10.14258/turczaninowia.19.1.6.