Almeida, F.F.D., Ector, L., Silva, E.S. & Wetzel, C.E. (2020)

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

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