@article{Buerger2020,
  author    = {Gerd B{\"u}rger},
  title     = {Intraseasonal oscillation indices from complex EOFs},
  journal   = {Journal of climate},
  volume    = {34},
  number    = {1},
  pages     = {107 -- 122},
  doi       = {10.1175/JCLI-D-20-0427.1},
  year      = {2020},
}