Effect of visible light on superoxide dismutase (SOD) activity in the red alga Gracilariopsis tenuifrons (Gracilariales, Rhodophyta) - Rossa, Marcelo Muniz; Oliveira, Mariana C; Okamoto, Oswaldo Keith; Lopes, Patricia Fátima; Colepicolo, Pio (Journal of Applied Phycology, 2002)