共 50 条
[21]
A Singular Nonlinear Second-Order Neumann Boundary Value Problem with Positive Solutions
[J].
THAI JOURNAL OF MATHEMATICS,
2009, 7 (02)
:243-257
[24]
Positive solutions of second-order linear difference equation with variable delays
[J].
Advances in Difference Equations,
2013
[27]
Positive solutions for a system of second-order discrete boundary value problems
[J].
Advances in Difference Equations,
2018