@article{articleb6fdb11a,
title   = {Catastrophic regime shift in water reservoirs and São Paulo water supply crisis},
author = {Coutinho, Renato M and Kraenkel, Roberto A and Prado, Paulo Inácio},
year = {2015},
doi = {10.1371/journal.pone.0138278},
journal   = {PLOS ONE}
}