A Riemann-Hilbert problem and the Bernoulli boundary condition in the variational theory of Stokes waves

Shargorodsky, E.; Toland, J. F.

Annales de l'I.H.P. Analyse non linéaire, Volume 20 (2003) p. 37-52

Periodic solutions for a class of Lorenz-lagrangian systems

Toland, J. F.

Annales de l'I.H.P. Analyse non linéaire, Volume 5 (1988) p. 211-220