Initial-value problems for linear ordinary differential equations with a small parameter
1976 ◽
Vol 53
(3)
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pp. 680-691
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1990 ◽
Vol 148
(1)
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pp. 63-78
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1963 ◽
Vol 14
(1)
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pp. 304-311
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2011 ◽
Vol 236
(6)
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pp. 1622-1636
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1964 ◽
Vol 15
(3)
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pp. 247-262
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2016 ◽
Vol 9
(4)
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pp. 619-639
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1988 ◽
Vol 35
(6)
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pp. 742-745
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2020 ◽
Vol 6
(1)
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pp. 7