1. V. I. Arnol’d, Selecta-60 [in Russian], Fazis, Moscow (1997), pp. 215–236.
2. V. V. Kozlov, General Theory of Vortices [in Russian], RKhD, Izhevsk (1998); English transl.: Dynamical Systems X: General Theory of Vortices (Encycl. Math. Sci., Vol. 67), Springer, Berlin (2003).
3. V. V. Pukhnachov, Usp. Mekh., 4, 6–76 (2006).
4. S. Chandrasekhar and P. C. Kendall, J. Astrophys., 126, 457–460 (1957).
5. J. B. Taylor, Phys. Rev. Lett., 33, 1139–1141 (1974).