@article{romao_2017, 
  title={Anisotropic thermal expansion in flexible materials}, 
  volume={96}, 
  DOI={10.1103/physrevb.96.134113}, 
  number={13}, 
  publisher={American Physical Society (APS)}, 
  author={Romao}, 
  year={2017}, 
  month={Oct}
  }