A study of the effects of chromium exposure on the growth of Pseudokirchneriella subcapitata (Korshikov) hindak evaluated by Central Composite Design and Response Surface Methodology - Lima, Patrícia Carla Giloni de; Delello, Danieli; Cremonez, Marcelo Luiz Moreschi; Eler, Márcia Noélia; Lima, Vanderlei Aparecido de; Espíndola, Evaldo Luiz Gaeta (Ecotoxicology, 2010)