Critical case for singularly perturbed linear boundary-value problems of ordinary differential equations
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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2003 ◽
Vol 137
(2-3)
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pp. 549-570
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1996 ◽
Vol 46
(3)
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pp. 385-404
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2016 ◽
Vol 106
(3)
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2006 ◽
Vol 172
(1)
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pp. 252-266
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