1. Klebanoff, P.S, Tidstrom, K.D. & Sargent, L.M. The three-dimensional nature of boundary layer instability. J. Fluid Mech., 12:1–34, 1962.
2. Kachanov, Yu.S., Kozlov, V.V., & Levchenko, V.Ya. Nonlinear development of wave in boundary layer. Izv. Akad. Nauk SSSR, Mech. Zhidk. i Gasa, (3):49–53, 1977. (In Russian).
3. Thomas, A.S.W. & Saric, W.S. Harmonic and subharmonic waves during layer transition. Bull. Amer. Soc., 26:1252, 1981.
4. Saric, W.S. & Thomas, A.S.W. Experiments on the subharmonic route to turbulence in boundary layers. In Tatsumi T., editor, Turbulence and Chaotic Phenomena in Fluids, pages 117–122. IUTAM, Springer, 1984.
5. Kachanov, Yu.S. & Levchenko, V.Ya. The resonance interaction of disturbances at laminar-turbulent transition. J. Fluid Mech., 138:209–247, 1984.