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Publication:3203383
zbMath0716.34101MaRDI QIDQ3203383
Publication date: 1990
Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Particular ordinary differential operators (Dirac, one-dimensional Schrödinger, etc.) (34L40) Oscillation theory, zeros, disconjugacy and comparison theory for ordinary differential equations (34C10)
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