1. P. Coullet, L. Gil, and J. Lega, Physica D 37, 91 (1989).
2. Cellular structures in instabilities, J. E. Wesfreid, and S. Zaleski, Eds., Lecture Notes in Physics 210, Springer-Verlag, Berlin (1984).
3. C. Normand, Y. Pomeau, and M. Velarde, Rev. Mod. Phys. 49, 581 (1977).
4. S. Chandrasekhar, Hydrodynamic and hydromagnetic stability, Clarendon, Oxford University Press (1961).
5. P. Bergé and M. Dubois, Contemp. Phys. 25, 535 (1984).