| article html file updated | 17 August 2026 06:25 CEST | Update | https://www.mdpi.com/2571-550X/3/1/9 |
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| article html file updated | 23 March 2020 04:31 CET | Update | N/A |
| article pdf uploaded. | 23 March 2020 04:29 CET | Updated version of record | https://www.mdpi.com/2571-550X/3/1/9/pdf |
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| article html file updated | 20 March 2020 12:35 CET | Original file | N/A |
| article pdf uploaded. | 20 March 2020 12:33 CET | Version of Record | https://www.mdpi.com/2571-550X/3/1/9/pdf-vor |
| article xml file uploaded | 20 March 2020 12:33 CET | Original file | N/A |
