| article html file updated | 31 August 2025 07:07 CEST | Update | https://www.mdpi.com/2224-2708/9/1/2 |
| article html file updated | 19 July 2022 21:09 CEST | Update | N/A |
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| article html file updated | 26 December 2019 10:49 CET | Original file | N/A |
| article pdf uploaded. | 26 December 2019 10:47 CET | Updated version of record | https://www.mdpi.com/2224-2708/9/1/2/pdf |
| article xml uploaded. | 26 December 2019 10:47 CET | Update | https://www.mdpi.com/2224-2708/9/1/2/xml |
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| article pdf uploaded. | 20 December 2019 13:52 CET | Version of Record | https://www.mdpi.com/2224-2708/9/1/2/pdf-vor |
| article xml file uploaded | 20 December 2019 13:52 CET | Original file | N/A |
