1. A topological invariant arising in the stability analysis of travelling waves;Alexander;J. Reine Angew. Math.,1990
2. E. Anderson, Z. Bai, C. Bischof, J. Demmel, J. Dongarra, J. Du Croz, A. Greenbaum, S. Hammarling, A. McKenney, S. Ostrouchov, D. Sorensen, lapack Users’ Guide, SIAM, Philadelphia, PA, 1995.
3. Stability limits of spirals and travelling waves in nonequilibrium media;Aronson;Phys. Rev. A,1992
4. U.M. Ascher, R.M. Mattheij, R.D. Russell, Numerical Solutions of Boundary Value Problems for Ordinary Differential Equations, Prentice-Hall, Englewood Cliffs, NJ, 1988.
5. Turbulence due to spiral breakup in a continuous excitable medium;Bär;Phys. Rev. E,1993