On The Existence of Periodic Solutions For Second Order Differential Equations with a Forcing Term

 

作者: Norman Levinson,  

 

期刊: Journal of Mathematics and Physics  （WILEY Available online 1943）
卷期: Volume 22, issue 1  

页码: 41-48

 

ISSN:0097-1421

 

年代: 1943

 

DOI:10.1002/sapm194322141

 

数据来源: WILEY

 

 

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