CONCRETE EXAMPLE OF THE EXISTENCE OF 4 LIMIT-CYCLES FOR PLANE QUADRATIC SYSTEMS

被引：0

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作者：

SHI, S ^{[1
]}

机构：

[1] ACAD SINICA,BUR APPL MATH,PEKING,PEOPLES R CHINA

来源：

SCIENTIA SINICA | 1980年 / 23卷 / 02期

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D O I：

暂无

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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页码：153 / 158

页数：6

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