Oscillations of differential equation with retarded argument
Božena Mihalíková, Pavol Šoltés (1985)
Mathematica Slovaca
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Božena Mihalíková, Pavol Šoltés (1985)
Mathematica Slovaca
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Rudolf Oláh (1984)
Czechoslovak Mathematical Journal
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Said R. Grace, Bikkar S. Lalli (1986)
Czechoslovak Mathematical Journal
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