Positive solutions of second-order differential equations
2009 ◽
Vol 58
(7)
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pp. 1425-1432
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2002 ◽
Vol 266
(2)
◽
pp. 479-491
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2005 ◽
Vol 184
(2)
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pp. 131-138
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2016 ◽
Vol 6
(1)
◽
pp. 87
2016 ◽
Vol 183
(2)
◽
pp. 229-239
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1992 ◽
Vol 120
(3-4)
◽
pp. 231-243
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2001 ◽
Vol 162
◽
pp. 127-148
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