%0 Journal Article
%T QUALITATIVE ANALYSIS FOR A CLASS OFCUBIC SYSTEMS<br>一类三次系统的定性分析
%A CHEN WEN-DENG
%A <br>陈文灯
%J 系统科学与数学
%D 1994
%I 
%X This paper makes a qualitative analysis for a class of cubic systems of the formand gives sufficient conditions for the existence, uniqueness and nonexistence of limitcycles for such systems.
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=37F46C35E03B4B86&jid=0CD45CC5E994895A7F41A783D4235EC2&aid=45E581BC46E6B1038AF4EC52C80864B3&yid=3EBE383EEA0A6494&vid=F3583C8E78166B9E&iid=E158A972A605785F&sid=DFEE4E8C33C95CEF&eid=51C74DF6A16DA45B&journal_id=1000-0577&journal_name=系统科学与数学&referenced_num=9&reference_num=0