Straight and coiled morphotypes of Cylindrospermopsis raciborskii (Wolos.) Seen. et Subba raju (Cyanobacteria): ecophysiology, genetic diversity and ultrastructure - Buch, B.; Hereman, T. C.; Moura, A. N.; Massola, N.; Bittencourt-Oliveira, Maria do Carmo (International Conference on Toxic Cyanobacteria, 2007)