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V. A. Ilin, “Mixed Problem Describing the Damping Process of a Bar Consisting of Two Sections of Different Density and Elasticity Provided that the Time of Wave’s Passage in Each of These Sections Coincide,” Trudi Ins tituta Matematiki i Mekhaniki Uro RAN, Vol. 269, 2010, pp. 132-141.

has been cited by the following article:

• TITLE: On the Frame Properties of System of Exponents with Piecewise Continuous Phase

  AUTHORS: Saeed Mohammadali Farahani, Tofig Isa Najafov

  KEYWORDS: System of Exponents; Frame Property; Perturbation

  JOURNAL NAME: Applied Mathematics, Vol.4 No.5, May 22, 2013

  ABSTRACT: A double system of exponents with piecewise continuous complex-valued coefficients are considered. Under definite conditions on the coefficients the frame property of this system in Lebesgue spaces of functions is investigated. Such systems arise in the spectral problems for discontinuous differential operators.