Multiple Solutions to Implicit Symmetric Boundary Value Problems for Second Order Ordinary Differential Equations (ODEs): Equivariant Degree Approach
1980 ◽
Vol 37
(2)
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pp. 285-295
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1988 ◽
Vol 8
(3)
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pp. 239-248
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1998 ◽
Vol 97
(2)
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pp. 455-470
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1995 ◽
Vol 125
(4)
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pp. 777-799
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2003 ◽
Vol 137
(2-3)
◽
pp. 549-570
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