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2022
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2021
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Bucharest: The Bucharest University of Economic Studies, 2021
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INCAS - National Institute for Aerospace Research Elie Carafoli, 2018
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EconJournals, 2022
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Kaunas University of Technology (KTU), 2021
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Bucharest University of Economic Studies, 2021
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Walter de Gruyter GmbH, 2021
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Scientific Research Publishing, Inc., 2021
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MDPI AG, 2023
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MDPI AG, 2024
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Engineering, Technology & Applied Science Research, 2023