1. Brøns, M.: Private communication (2015)
2. Brøns, M., Krupa, M., Wechselberger, M.: Mixed mode oscillations due to the generalized canard phenomenon. In: Nagata, W., Sri Namachchivaya, N. (eds.) Bifurcation Theory and Spatio-Temporal Pattern Formation, Volume 49 of Fields Institute Communications, pp. 39–64. American Mathematical Society, Providence (2006)
3. Carr, J.: Applications of Centre Manifold Theory, vol. 35. Springer, New York (1981)
4. Colombo, A., Jeffrey, M.R.: Nondeterministic chaos, and the two-fold singularity in piecewise smooth flows. SIAM J. Appl. Dyn. Syst. 10(2), 423–451 (2011)
5. Desroches, M., Jeffrey, M.R.: Canards and curvature: nonsmooth approximation by pinching. Nonlinearity 24(5), 1655–1682 (2011)