@article{articlea627923b,
title   = {Simultaneous analysis of 137Cs, 90Sr, 238Pu and 239+240Pu in Brazilian seawater},
author = {Figueira, R C L and Braga, Elisabete de Santis and Cunha, I I L},
year = {2001},
doi = {10.1023/A:1010673602722},
journal   = {Journal of Radioanalytical and Nuclear chemistry}
}