O.  Necchi, Jr, Vis, M. L., and Oliveira, M. C., ?Phylogenetic relationship of Sirodotia species (Batrachospermales, Rhodophyta) in North and South America?, Cryptogamie Algologie, vol. 28, 2007.

O.  Necchi, Jr, Vis, M. L., and Oliveira, M. C., ?Phylogenetic relationships in Kumanoa (Batrachospermales, Rhodophyta) species in Brazil with the proposal of Kumanoa amazonensis sp. nov.?, Phycologia, vol. 49, 2010.