A nonexistence test for biharmonic Green's functions of clamped bodies. Mitsuru Nakai, Leo Sario (1977) Mathematica Scandinavica
A probabilistic representation for the solutions to some non-linear PDEs using pruned branching trees D. Blömker, M. Romito, R. Tribe (2007) Annales de l'I.H.P. Probabilités et statistiques
Almost continuous solutions of geometric Hamilton–Jacobi equations Antonio Siconolfi (2003) Annales de l'I.H.P. Analyse non linéaire