Lianghaolong Lu, Linping Peng, Zhaosheng Feng. Number of Critical Periods for Perturbed Rigidly Isochronous Centers. I. J. Bifurcation and Chaos, 26(13):1-19, 2016. [doi]
@article{LuPF16,
title = {Number of Critical Periods for Perturbed Rigidly Isochronous Centers},
author = {Lianghaolong Lu and Linping Peng and Zhaosheng Feng},
year = {2016},
doi = {10.1142/S0218127416502205},
url = {http://dx.doi.org/10.1142/S0218127416502205},
researchr = {https://researchr.org/publication/LuPF16},
cites = {0},
citedby = {0},
journal = {I. J. Bifurcation and Chaos},
volume = {26},
number = {13},
pages = {1-19},
}