@article{article6b4feffe,
title   = {Amplitude-frequency relationship obtained using Hamiltonian approach for oscillators with sum of non-integer order nonlinearities},
author = {Navarro, Hélio Aparecido and Cveticanin, L.},
year = {2016},
doi = {10.1016/j.amc.2016.06.047},
journal   = {Applied Mathematics and Computation}
}