Existence and Multiplicity of Positive Solutions for Nonlinear Second Order Boundary Value Problems for Integro-differential Equations
QIAN Yuan-yuan,LI Yong-xiang
Journal of Hebei University (Natural Science Edition) . 2011, (5): 456 -461 .  DOI: 10.3969/j.issn.1000-1565.2011.05.003