Hauke, R.L. 1963: A taxonomic monograph of the genus Equisetum subgenus Hippochaete. Nova Hedwigia Beiheft 8: 1–123.
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| Hauke, R.L. 1963: A taxonomic monograph of the genus Equisetum subgenus Hippochaete. Nova Hedwigia Beiheft 8: 1–123. |