scholarly journals Periodic solutions of a class of nonautonomous second order differential systems with $(q,p)$--Laplacian

2010 ◽  
Vol 17 (5) ◽  
pp. 841-850 ◽  
Author(s):  
Paşca Daniel
Keyword(s):  
Periodic Solutions ◽  
Second Order ◽  
Differential Systems

scholarly journals Twin positive periodic solutions of second order singular differential systems

2005 ◽  
Vol 25 (2) ◽  
pp. 263 ◽  
Author(s):  
Xiaoning Lin ◽  
Daqing Jiang ◽  
Donal O'Regan ◽  
Ravi P. Agarwal
Keyword(s):  
Periodic Solutions ◽  
Second Order ◽  
Positive Periodic Solutions ◽  
Differential Systems
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