1. Angenent, S.: Parabolic equations for curves on surfaces. I: Curves with p-integrable curvature. Ann. Math. 132, 451–483 (1990)
2. Angenent, S.: Parabolic equations for curves on surfaces. II: Intersections, blow-up and generalized solutions. Ann. Math. 133, 171–251 (1991)
3. Angenent, S.: Inflection points, extatic points and curve shortening. In: Simó, C. (ed.), Hamiltonian systems with three or more degrees of freedom. Dordrecht: Kluwer. NATO ASI Ser., Ser. C, Math. Phys. Sci. 533, 3–10 (1999)
4. Arnol’d, V.I.: Geometrical Methods in the Theory of Ordinary Differential Equations. Berlin, Heidelberg, New York: Springer 1983
5. Braune, M., Engel, H.: Compound rotation of spiral waves in a light-sensitive Belousov-Zhabotinsky medium. Chem. Phys. Lett. 204, 257–264 (1993)