| article html file updated | 31 August 2025 14:40 CEST | Update | https://www.mdpi.com/2227-7099/8/1/21 |
| article html file updated | 20 July 2022 23:10 CEST | Update | N/A |
| article html file updated | 1 April 2020 22:10 CEST | Update | N/A |
| article html file updated | 27 March 2020 07:15 CET | Original file | N/A |
| article pdf uploaded. | 27 March 2020 07:13 CET | Updated version of record | https://www.mdpi.com/2227-7099/8/1/21/pdf |
| article xml uploaded. | 27 March 2020 07:13 CET | Update | https://www.mdpi.com/2227-7099/8/1/21/xml |
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| article pdf uploaded. | 17 March 2020 12:52 CET | Version of Record | https://www.mdpi.com/2227-7099/8/1/21/pdf-vor |
| article xml file uploaded | 17 March 2020 12:52 CET | Original file | N/A |
