Almeida, F.F.D., Ector, L., Silva, E.S. and Wetzel, C.E. 2020.

Gomphonema frequentiformis (Metzeltin & Krammer) comb. nov. (Bacillariophyta): ecology and taxonomy of a Neotropical diatom

. Phytotaxa. 439, 3 (Apr. 2020), 265–275. DOI:https://doi.org/10.11646/phytotaxa.439.3.8.