Linear independence of the principal solutions at ∞ and −∞ for formally self-adjoint differential systems
1978 ◽
Vol 29
(1)
◽
pp. 15-27
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1983 ◽
Vol 3
(4)
◽
pp. 361-368
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1988 ◽
Vol 49
(C2)
◽
pp. C2-389-C2-392
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Keyword(s):
2019 ◽
Vol 10
(2)
◽
pp. 93-102
Keyword(s):