@article{ganguly2025modeling,
  title={Modeling Nonstationary Time Series Using Locally Stationary Basis Processes},
  author={Ganguly, Shreyan and Craigmile, Peter F},
  journal={Journal of Time Series Analysis},
  year={2025},
  publisher={Wiley Online Library}
}

@article{dahlhaus1997fitting,
  title={Fitting time series models to nonstationary processes},
  author={Dahlhaus, Rainer},
  journal={The annals of Statistics},
  volume={25},
  number={1},
  pages={1--37},
  year={1997},
  publisher={Institute of Mathematical Statistics}
}

@book{shumway2025time,
  title={Time Series Analysis and Its Applications: With R Examples},
  author={Shumway, Robert H and Stoffer, David S},
  year={2025},
  publisher={Springer}
}

@online{NOAA_ENSO,
  author = {Michael McPhaden},
  title = {Has climate change already affected ENSO?},
  year = {2025},
  url = {https://www.climate.gov/news-features/blogs/enso/has-climate-change-already-affected-enso},
  urldate = {2026-03-11}
}