Note on Levinson's Existence Theorem for Forced Periodic Solutions of a Second Order Differential Equation

 

作者: C. E Langenhop,  

 

期刊: Journal of Mathematics and Physics  （WILEY Available online 1951）
卷期: Volume 30, issue 1  

页码: 36-39

 

ISSN:0097-1421

 

年代: 1951

 

DOI:10.1002/sapm195130136

 

数据来源: WILEY

 

 

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