| article html file updated | 31 August 2025 12:21 CEST | Update | https://www.mdpi.com/2312-7481/6/1/9 |
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| article html file updated | 1 April 2020 22:44 CEST | Update | - |
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| article pdf uploaded. | 26 March 2020 10:31 CET | Updated version of record | https://www.mdpi.com/2312-7481/6/1/9/pdf |
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| article pdf uploaded. | 21 February 2020 13:51 CET | Version of Record | https://www.mdpi.com/2312-7481/6/1/9/pdf-vor |
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