1. Functional analysis and periodic solutions of nonlinear differential equations;Cesari, Lamberto;Contributions to Differential Equations,1963
2. Functional analysis and Galerkin’s method;Cesari, Lamberto;Michigan Math. J.,1964
3. Functional analysis, nonlinear differential equations, and the alternative method;Cesari, Lamberto,1976
4. A nonlinear problem in potential theory;Cesari, Lamberto;Michigan Math. J.,1969
5. Periodic solutions in the large of nonlinear ordinary differential equations;Cesari, Lamberto;Rend. Mat. (6),1975