@article{1982:north,
  title = {Sampling {{Errors}} in the {{Estimation}} of {{Empirical Orthogonal Functions}}},
  author = {North, Gerald R. and Bell, Thomas L. and Cahalan, Robert F. and Moeng, Fanthune J.},
  year = {1982},
  month = jul,
  volume = {110},
  pages = {699--706},
  issn = {0027-0644},
  doi = {10.1175/1520-0493(1982)110<0699:SEITEO>2.0.CO;2},
  journal = {Monthly Weather Review},
  number = {7}
}

@book{2011:wilks,
  title = {Statistical {{Methods}} in the {{Atmospheric Sciences}}},
  author = {Wilks, Daniel S.},
  year = {2011},
  month = jun,
  edition = {3 edition},
  publisher = {{Academic Press}},
  address = {{Amsterdam ; Boston}},
  isbn = {978-0-12-385022-5},
  language = {English}
}
