Von Konrat, M., L. Soderstrom, and A. Hagborg. “The Early Land Plants Today Project (ELPT): A Community-Driven Effort and a New Partnership With Phytotaxa”. Phytotaxa, vol. 9, no. 1, Sept. 2014, pp. 11-21, doi:10.11646/phytotaxa.9.1.4.