1. L. D. Meshalkin and Ya. G. Sinai, ?Investigation into the stability of a stationary solution of a system of equations of the two-dimensional motion of an incompressible viscous fluid,? Prikl. Mat. Mekh.,25, 1140 (1961).
2. V. I. Yudovich, ?Example of the excitation of a secondary stationary or periodic flow when the laminar flow of a viscous incompressible fluid becomes unstable,? Prikl. Mat. Mekh.,29, 453 (1965).
3. F. V. Dolzhanskii, V. I. Klyatskin, A. M. Obukhov, and M. A. Chusov, Nonlinear Systems of Hydrodynamic Type [in Russian], Nauka, Moscow (1974), p. 160.
4. V. I. Klyatskin, ?Nonlinear theory of the stability of periodic flows,? Prikl. Mat. Mekh.,36, 263 (1972).
5. A. A. Nepomnyashchii, ?Stability of secondary flows of a viscous fluid in an unbounded space,? Prikl. Mat. Mekh.,40, 886 (1976).