@misc{74066,
  author = {Mike Cullen},
  title = {On the accuracy of the semi-geostrophic approximation},
  year = {1999},
  journal = {ECMWF Technical Memoranda},
  number = {285},
  pages = {21},
  month = {07/1999},
  publisher = {ECMWF},
  address = {Shinfield Park, Reading},
  url = {https://www.ecmwf.int/node/8829},
  doi = {10.21957/en27xnnn8},
  language = {eng},
}