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Displaying similar documents to “On a result of Etgen and Lewis”

Oscillation criteria for differential equation $y^{(4)} + P (t) y^{''} + R (t) y^{'} + Q (t) y = 0$

Ján Regenda (1984)

Mathematica Slovaca

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A Hille-Wintner comparison theorem for second order differential systems

Garret J. Etgen, Roger T. Lewis (1980)

Czechoslovak Mathematical Journal

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Comparison theorems for fourth order differential equations.

Etgen, Garret J., Taylor, Willie E.jun. (1986)

International Journal of Mathematics and Mathematical Sciences

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