Differential Equations & Applications · Volume 3, Issue 4 Internal degrees of freedom in perturbed nonlinear Klein-Gordon equations 03-33 Pages 527-553 DOI 10.7153/dea-03-33 Downloads Short PDF Full PDF PNG Authors L. Vázquez S. Jiménez A. Bellorín L. E. Guerrero J. A. González Keywords solitons long-range interactions power-law behaviors Subject classes 35Q51 37K40