1. Some American petrified calamitean stems;Andrews;Ann. Mo. Bot. Gard.,1952
2. Some exceptionally large calamite stems;Andrews;Phytomorphology,1965
3. Lepidophloios—and ontogeny in arborescent lycopods;Andrews;Am. J. Bot.,1958
4. Calamiten aus dem Oberkarbon und Rotliegenden des Thüringer Waldes;Barthel;100 Jahre Arboretum (1879–1979),1980
5. Lycopod succession in coals: an example from the Low Barnsley Seam (Westphalian B), Yorkshire, England;Bartram,1987