Pei Yu, Maoan Han. Critical Periods of Planar Revertible Vector Field with Third-Degree Polynomial Functions. I. J. Bifurcation and Chaos, 19(1):419-433, 2009. [doi]
@article{YuH09,
title = {Critical Periods of Planar Revertible Vector Field with Third-Degree Polynomial Functions},
author = {Pei Yu and Maoan Han},
year = {2009},
doi = {10.1142/S0218127409022981},
url = {http://dx.doi.org/10.1142/S0218127409022981},
researchr = {https://researchr.org/publication/YuH09},
cites = {0},
citedby = {0},
journal = {I. J. Bifurcation and Chaos},
volume = {19},
number = {1},
pages = {419-433},
}