Asymptotic Stability of the Solutions of Neutral Linear Fractional System with Nonlinear Perturbation by Andrey Zahariev, Hristo Kiskinov

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About the Resolvent Kernel of Neutral Linear Fractional System with Distributed Delays by Hristo Kiskinov, Mariyan Milev, Andrey Zahariev

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Hyers–Ulam and Hyers–Ulam–Rassias Stability for Linear Fractional Systems with Riemann–Liouville Derivatives and Distributed Delays by Hristo Kiskinov, Ekaterina Madamlieva, Andrey Zahariev

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Correction: Kiskinov et al. Existence of Absolutely Continuous Fundamental Matrix of Linear Fractional System with Distributed Delays. <i>Mathematics</i> 2021, <i>9</i>, 150 by Hristo Kiskinov, Ekaterina Madamlieva, Magdalena Veselinova, Andrey Zahariev

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Psi-exponential dichotomy for linear differential equations in a Banach space by Atanaska Georgieva, Hristo Kiskinov, Stepan Kostadinov, Andrey Zahariev

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Continuous Dependence on the Initial Functions and Stability Properties in Hyers–Ulam–Rassias Sense for Neutral Fractional Systems with Distributed Delays by Hristo Kiskinov, Mariyan Milev, Magdalena Veselinova, Andrey Zahariev

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Existence of Absolutely Continuous Fundamental Matrix of Linear Fractional System with Distributed Delays by Hristo Kiskinov, Ekaterina Madamlieva, Magdalena Veselinova, Andrey Zahariev

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Integral Representation of the Solutions for Neutral Linear Fractional System with Distributed Delays by Hristo Kiskinov, Ekaterina Madamlieva, Magdalena Veselinova, Andrey Zahariev

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A Comparison of a Priori Estimates of the Solutions of a Linear Fractional System with Distributed Delays and Application to the Stability Analysis by Hristo Kiskinov, Magdalena Veselinova, Ekaterina Madamlieva, Andrey Zahariev

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On the Preservation with Respect to Nonlinear Perturbations of the Stability Property for Nonautonomous Linear Neutral Fractional Systems with Distributed Delays by Ekaterina Madamlieva, Hristo Kiskinov, Milena Petkova, Andrey Zahariev

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Variable-Order Fractional Linear Systems with Distributed Delays—Existence, Uniqueness and Integral Representation of the Solutions by Hristo Kiskinov, Mariyan Milev, Milena Petkova, Andrey Zahariev

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Existence of solutions of nonlinear differential equations with $\psi$-exponential or $\psi$-ordinary dichotomous linear part in a Banach space by Atanaska Georgieva, Hristo Kiskinov, Stepan Kostadinov, Andrey Zahariev

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Machine Learning Algorithm for Mid-Term Projection of the EU Member States’ Indebtedness by Silvia Zarkova, Dimitar Kostov, Petko Angelov, Tsvetan Pavlov, Andrey Zahariev

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STRATEGIES FOR STRENGTHENING BUSINESS ECONOMIC SECURITY WITH ACCOUNT TO GLOBAL FINANCIAL CHALLENGES by Natalya Ushenko, Ganna Likhonosova, Andrey Zahariev, Larysa Shaulska, Marcin Kęsy, Victoriia Hurochkina

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