scientific article; zbMATH DE number 3377791
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Publication:5648787
zbMath0238.34111MaRDI QIDQ5648787
Publication date: 1967
Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Periodic solutions to ordinary differential equations (34C25) Oscillation theory, zeros, disconjugacy and comparison theory for ordinary differential equations (34C10) Periodic solutions to functional-differential equations (34K13)
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