@misc{74771,
  author = {W.A. Heckley},
  title = {Data assimilation and anomalous lows},
  year = {1989},
  journal = {ECMWF Technical Memoranda},
  number = {149},
  pages = {16},
  month = {02/1989},
  publisher = {ECMWF},
  address = {Shinfield Park, Reading},
  url = {https://www.ecmwf.int/node/9825},
  doi = {10.21957/sl9c5r9e},
  language = {eng},
}