Ordinary Differential Equations

A criterion for the bessel property of systems of the form $\{\exp(i\lambda_nt)\sin(\mu_nt)\}$ and $\{\exp(i\lambda_nt)\cos(\mu_nt)\}$

A. V. Konashenko

Smolensk State Pedagogical University

UDC: 517.927.25

Received: 28.12.1998

 English version: Differential Equations, 2000, 36:6, 807–812

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