Williams, David M. “Why Is Synedra berolinensis So Hard to Classify? More on Monotypic Taxa”. Phytotaxa 127, no. 1 (August 29, 2013): 113–127. Accessed December 6, 2025. https://phytotaxa.mapress.com/pt/article/view/phytotaxa.127.1.13.