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Sturmian theory for a class of nonselfadjoint differential systems

Marvin S. Keener, Curtis C. Travis

Annali di Matematica Pura ed Applicata (1923 -) · 1980 · 21 citations · 15 references

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References

15

Positive Solutions of Operator Equations.

A. R. Brodsky, M. A. Krasnosel’skii, Richard E. Flaherty et al. · American Mathematical Monthly · 1967 · 2.1K citations

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Non-oscillation theorems

Einar Hille · Transactions of the American Mathematical Society · 1948 · 344 citations · Full text

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Oscillation criteria for second-order linear differential equations

Zeev Nehari · Transactions of the American Mathematical Society · 1957 · 267 citations · Full text

, , +9

A simplified proof of the expansion theorem for singular second order linear differential equations

Norman Levinson · Duke Mathematical Journal · 1951 · 63 citations

, , +5

On the solutions of certain linear nonhomogeneous second-order differential equations

Marvin S. Keener · Applicable Analysis · 1971 · 61 citations

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