| article html file updated | 31 August 2025 13:40 CEST | Update | https://www.mdpi.com/2199-8531/6/1/18 |
| article html file updated | 20 July 2022 22:09 CEST | Update | - |
| article html file updated | 7 March 2020 18:07 CET | Update | - |
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| article pdf uploaded. | 6 March 2020 11:25 CET | Version of Record | https://www.mdpi.com/2199-8531/6/1/18/pdf |
| article xml uploaded. | 6 March 2020 11:25 CET | Update | https://www.mdpi.com/2199-8531/6/1/18/xml |
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