John Graef

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Publications (59)

• NONCANONICAL THIRD-ORDER NONLINEAR DIFFERENTIAL EQUATIONS WITH MIXED ARGUMENTS: OSCILLATION VIA CANONICAL TRANSFORM
  Journal of Mathematical Sciences 2026 DOI: 10.1007/s10958-026-08421-3
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• Oscillation of Second‐Order Noncanonical Delay Differential Equations With a Neutral Part Containing Sublinear and Superlinear Terms
  Mathematical Methods in the Applied Sciences 2025 DOI: 10.1002/mma.10822
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• Theodore A. Burton (1935–2025)
  Electronic Journal of Qualitative Theory of Differential Equations 2025 DOI: 10.14232/ejqtde.2025.1.40
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• Note on the oscillation of second-order hybrid type delay differential equations
  Electronic Journal of Qualitative Theory of Differential Equations 2025 DOI: 10.14232/ejqtde.2025.1.51
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• Existence of Solutions to the Variable Order Caputo Fractional Thermistor Problem
  Fractal and Fractional 2025 DOI: 10.3390/fractalfract9030139
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• Ulam–Hyers–Rassias Stability of ψ-Hilfer Volterra Integro-Differential Equations of Fractional Order Containing Multiple Variable Delays
  Fractal and Fractional 2025 DOI: 10.3390/fractalfract9050304
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• Existence and uniqueness of solutions to a coupled system of implicit fractional differential equations
  Mathematica Moravica 2025 DOI: 10.5937/MatMor2501043G
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• Multivalued Contraction Fixed-Point Theorem in b-Metric Spaces
  Mathematics 2024 DOI: 10.3390/math12040567
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• New oscillation criteria for third order nonlinear functional differential equations
  Electronic Journal of Qualitative Theory of Differential Equations 2024 DOI: 10.14232/ejqtde.2024.1.70
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• Multiple solutions to a quasilinear periodic boundary value problem with impulsive effects
  Electronic Journal of Qualitative Theory of Differential Equations 2024 DOI: 10.14232/ejqtde.2024.1.12
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