@article{tomé_2006,  title={Entropy production in nonequilibrium systems described by a Fokker-Planck equation},  volume={36},  ISSN={0103-9733},  url={https://doi.org/10.1590/S0103-97332006000700029},  DOI={10.1590/S0103-97332006000700029},  number={4a},  journal={Brazilian Journal of Physics},  publisher={Sociedade Brasileira de Física},  author={Tomé, Tânia},  year={2006},  month={Dec},  pages={1285–1289} }