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中国科学院数学与系统科学研究院期刊网
ISSN 0168-9673 CN 11-2041/O1
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Weak Centers and Local Bifurcations of Critical Periods at Infinity for a Class of Rational Systems
Wen-tao HUANG, Valery G. ROMANOVSKI, Wei-nian ZHANG
Acta Mathematicae Applicatae Sinica(English Series) . 2013, (
2
): 377 -390 . DOI: 10.1007/s10255-013-0220-8