1. V. I., 1965: Condition for nonlinear stability of stationary plane curvilinear flows of an ideal fluid. Dokl. Akad. Nauk. SSSR, 165, 975–978 (English Transi: Soviet Math., 6, 773-777).
2. Arnol’d, V. I., 1969: On a priori estimate in the theory of hydrodynamic stability. Amer. Math. Soc. Transi, 19, 267–269.
3. Charney, J. G., 1947: The dynamics of long waves in a baroclinic westerly current. J. Meteor., 4, 135–163.
4. Eady, E. T., 1949: Long waves and cyclone waves. Tellus, 1, 33–52.
5. Fjφrtoft, R., 1950: Application of integral theorems in deriving criteria of stability for laminar flows and for baroclinic circular vortex. Geophys. Publ, 17(b), 1–52.