@article {1995, title = {Classical solutions for a perturbed N-body system}, journal = {Topological nonlinear analysis, II (Frascati, 1995), 1--86, Progr. Nonlinear Differential Equations Appl., 27, Birkhauser Boston, Boston, MA, 1997}, number = {SISSA;1/96/ILAS/FM}, year = {1995}, publisher = {SISSA Library}, url = {http://hdl.handle.net/1963/126}, author = {Gianfausto Dell{\textquoteright}Antonio} }