Nonlinear boundary value problems for second order differential equations
1970 ◽
Vol 7
(3)
◽
pp. 459-472
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1975 ◽
Vol 50
(2)
◽
pp. 373-383
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2007 ◽
Vol 332
(2)
◽
pp. 1380-1392
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1989 ◽
Vol 79
(1)
◽
pp. 62-78
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2001 ◽
Vol 7
(2)
◽
pp. 297-321
◽
1980 ◽
Vol 10
(1)
◽
pp. 35-58
◽
1993 ◽
Vol 22
(1-2)
◽
pp. 11-22