Non-Linear Differential Equations of Higher Order (R. Reissig, G. Sansone and R. Conti)
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2010 ◽
Vol 30
(4)
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pp. 1291-1300
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1985 ◽
Vol 37
(2)
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pp. 193-197
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1951 ◽
Vol s1-26
(3)
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pp. 215-221
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1994 ◽
Vol 57
(2)
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pp. 138-148
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