Singular boundary-value problems for ordinary second-order differential equations
1988 ◽
Vol 43
(2)
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pp. 2340-2417
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2004 ◽
Vol 147
(3)
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pp. 629-644
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2010 ◽
Vol 12
(1)
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pp. 21-26
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1996 ◽
Vol 130
(2)
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pp. 333-355
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2005 ◽
Vol 69
(1-2)
◽
pp. 83-96
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2007 ◽
Vol 331
(1)
◽
pp. 159-176
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