@article{article1725a8fe,
title   = {The influence of algal densities on the toxicity of chromium for Ceriodaphnia dubia Richard (Cladocera, Crustacea)},
author = {Rodgher, Suzelei and Espíndola, Evaldo Luiz Gaeta},
year = {2008},
doi = {10.1590/s1519-69842008000200015},
journal   = {Brazilian Journal of Biology}
}