| article html file updated | 31 August 2025 19:32 CEST | Update | https://www.mdpi.com/2079-3200/8/2/21 |
| article html file updated | 21 July 2022 03:58 CEST | Update | N/A |
| article html file updated | 8 October 2020 23:46 CEST | Update | N/A |
| article html file updated | 30 June 2020 05:11 CEST | Original file | N/A |
| article pdf uploaded. | 30 June 2020 05:09 CEST | Updated version of record | https://www.mdpi.com/2079-3200/8/2/21/pdf |
| article xml uploaded. | 30 June 2020 05:09 CEST | Update | https://www.mdpi.com/2079-3200/8/2/21/xml |
| article xml file uploaded | 30 June 2020 05:09 CEST | Update | N/A |
| article pdf uploaded. | 6 May 2020 11:52 CEST | Version of Record | https://www.mdpi.com/2079-3200/8/2/21/pdf-vor |
| article xml file uploaded | 6 May 2020 11:52 CEST | Original file | N/A |
