Liu, B., Williams, D.M. and Tan, L. 2017.

Three new species of Ulnaria (Bacillariophyta) from the Wuling Mountains Area, China

. Phytotaxa. 306, 4 (May 2017), 241–258. DOI:https://doi.org/10.11646/phytotaxa.306.4.1.