Beléndez, Augusto, Schneider, Klaus R. Erratum to “Harmonic balancing approach to nonlinear oscillations of a punctual charge in the electric field of charged ring” [Phys. Lett. A 373 (7) (2009) 735–740] Physics Letters A. 2019, 383(11): 1214. doi:10.1016/j.physleta.2019.02.018 URI: http://hdl.handle.net/10045/90887 DOI: 10.1016/j.physleta.2019.02.018 ISSN: 0375-9601 (Print) Abstract: Keywords:Nonlinear oscillator, Harmonic balance method, Approximate frequency Elsevier info:eu-repo/semantics/article