| article html file updated | 31 August 2025 09:06 CEST | Update | https://www.mdpi.com/2220-9964/9/1/51 |
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| article pdf uploaded. | 23 January 2020 07:21 CET | Updated version of record | https://www.mdpi.com/2220-9964/9/1/51/pdf |
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| article pdf uploaded. | 15 January 2020 17:53 CET | Version of Record | https://www.mdpi.com/2220-9964/9/1/51/pdf-vor |
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