@article{aa5ef98d4df042239598d5d989af5649,
title = "Conditions for origin to be a center and the bifurcation of limit cycles in a class of cubic systems",
abstract = " This article was published in the Chinese Science Bulletin .",
keywords = "Center, Fine focus, Focal value, Limit cycle, Symbolic computation",
author = "Jiehua Zhu and Siming Zhu",
note = "Ordinary Differential Equations Theory and its Applications (in Chinese), Beijing: Science Press, 1992, 222-222.",
year = "1997",
month = jul,
doi = "10.1007/BF02882836",
language = "English",
volume = "42",
pages = "1157--1161",
journal = "Chinese Science Bulletin",
issn = "1001-6538",
publisher = "Elsevier B.V.",
number = "14",
}