@article{matta_gonçalves_bizarro_2012,  title={Delay discounting: concepts and measures},  volume={5},  ISSN={1983-3288},  url={https://doi.org/10.3922/j.psns.2012.2.03},  DOI={10.3922/j.psns.2012.2.03},  number={2},  journal={Psychology & Neuroscience},  publisher={Pontificia Universidade Católica do Rio de Janeiro, Universidade de Brasília, Universidade de São Paulo},  author={Matta, Adriana da and Gonçalves, Fábio Leyser and Bizarro, Lisiane},  year={2012},  month={Jul},  pages={135–146} }