1. Hofer, H. and Toland, J.F., Homoclinic, heteroclinic and periodic orbits for a class of Hamiltonian systems. Math. Annal., 268 (1984), 387–403.
2. TOLAND, J.F., On the bifurcation of waves in a Boussinesq system of equations. (To appear)
3. Klassen, G.A. and Troy, W.C., Stationary wave solutions of a system of reaction-diffusion equations derived from the Fitzhugh-Nagumo Equations. SIAM J. Appl. Math., 44 (1984), 96–110.
4. Toland, J.F., Necessary and sufficient conditions for the existence of homoclinic orbits for certain pairs of Euler- Lagrange equations. (To appear)
5. Hofer, H. and Toland, J.F., Free oscillations of prescribed energy at a saddle point of the potential in Hamiltonian dynamics. (To appear)