1. Andrews D. G. Holton J. R. & Leovy C. B. (1987). Middle atmosphere
2. dynamics. https://www.osti.gov/biblio/5936274
3. Anstey J. A. & Shepherd T. G. (2014). High-latitude influence of the quasi
4. biennial oscillation. Quarterly Journal of the Royal Meteorological Society
5. 140(678) 1-21. https://doi.org/10.1002/qj.2132