scholarly journals Multiplicity Results via Topological Degree for Impulsive Boundary Value Problems under Non-Well-Ordered Upper and Lower Solution Conditions

2008 ◽  
Vol 2008 ◽  
pp. 1-21 ◽  
Author(s):  
Xu Xian ◽  
Donal O'Regan ◽  
R. P. Agarwal
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