1. Ruelle, D. and F. Takens, On the nature of turbulence, Comm. Math. Phys., vol. 20 (1971) 167:192.
2. Milnor, J., On the concept of attractor, Comm. Math. Phys., vol. 99 (1985) 177:195.
3. Hunt, B. R., T. Sauer, J. A. Yorke, Prevalence: a translation invariant “almost every” on infinite-dimensional spaces, Bull. AMS, vol. 27, nr. 2 (1992) 217:238.
4. Birnir, B. and R. Grauer. The global attractor of the damped and driven sine-Gordon equation, to appear in Comm. Math. Phys.
5. Grauer, R. and B. Birnir, The center manifold and bifurcations of the sine-Gordon breather, Physica D, vol. 56 (1992) 165:184.