PPG I (2016). «A community-derived classification for extant lycophytes and ferns». Journal of Systematics and Evolution. 54 (6): 563–603. doi:10.1111/jse.12229
Carl J. Rothfels; Anders Larsson; Li-Yaung Kuo; Petra Korall; Wen- Liang Chiou; Kathleen M. Pryer (2012). «Overcoming Deep Roots, Fast Rates, and Short Internodes to Resolve the Ancient Rapid Radiation of Eupolypod II Ferns». Systematic Biology. 61 (1): 490–509. PMID22223449. doi:10.1093/sysbio/sys001
Carl J. Rothfels; Anders Larsson; Li-Yaung Kuo; Petra Korall; Wen- Liang Chiou; Kathleen M. Pryer (2012). «Overcoming Deep Roots, Fast Rates, and Short Internodes to Resolve the Ancient Rapid Radiation of Eupolypod II Ferns». Systematic Biology. 61 (1): 490–509. PMID22223449. doi:10.1093/sysbio/sys001