@article{DLucas2017b</br>
author = {Lucas</br> D. and Caulfield</br> C. P.}</br>
journal = {J. Fluid Mech.}</br>
title = {Irreversible mixing by unstable periodic orbits in stratified turbulence}</br>
volume={832}</br>
pages={R1}</br>
year={2017}</br>
publisher={Cambridge University Press}
URL = {https://arxiv.org/abs/1706.02536}
}