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Sur une propriété des intégrales de l’équation \(y^{(n)}+Q(x)y=0, n=3, 4\). (French) Zbl 0089.06604


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References:

[1] M. Švec: Eine Eigenwertaufgabe der Differentialgleichung \(y^{(4)}+Q(x,\lambda)y=0\) . Чехословацкий математический журнал Т. 6 (81), 1956, 46-71. · Zbl 0075.07801
[2] R. L. Potter: On self-adjoint differential equation of second order. Pacific J. Math., 3 (1953), 467-491. · Zbl 0051.06502 · doi:10.2140/pjm.1953.3.467
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