@article{09entrain,
  author = {David M. Romps},
  title = {A direct measure of entrainment},
  journal = {Journal of the Atmospheric Sciences},
  volume = {67},
  number = {6},
  pages = {1908--1927},
  month = jun,
  year = {2010},
  doi = {10.1175/2010jas3371.1},
  url = {https://doi.org/10.1175/2010jas3371.1},
}