154 citations · 798 across the 35 of their papers we have counts for
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math.AP2005★ 4 cited
Periodic solutions of wave equations for asymptotically full measure sets of frequencies
Pietro Baldi, Massimiliano Berti
We prove existence and multiplicity of small amplitude periodic solutions of the completely resonant wave equation u_tt - u_xx + f(x,u)=0 with Dirichlet boundary conditions where f…
math.FA2005★ 1 cited
Quasi-periodic solutions of completely resonant forced wave equations
Massimiliano Berti, Michela Procesi
We prove existence of quasi-periodic solutions with two frequencies of completely resonant, periodically forced nonlinear wave equations with periodic spatial boundary conditions.…