Schneider, Harald; Schuettpelz, Eric «Systematics and evolution of lycophytes and ferns». Journal of Systematics and Evolution, 54, 6, novembre 2016, pàg. 561–562. DOI: 10.1111/jse.12231.
PPG I «A community-derived classification for extant lycophytes and ferns». Journal of Systematics and Evolution, 54, 6, 2016, p. 563–603. DOI: 10.1111/jse.12229.
Kathleen M. Pryer, Eric Schuettpelz, Paul G. Wolf, Harald Schneider, Alan R. Smith and Raymond Cranfill «Phylogeny and evolution of ferns (monilophytes) with a focus on the early leptosporangiate divergences». American Journal of Botany, 91, 10, 2004, p. 1582–1598. DOI: 10.3732/ajb.91.10.1582.
