| article html file updated | 31 August 2025 07:23 CEST | Update | https://www.mdpi.com/2304-8158/9/1/20 |
| article html file updated | 19 July 2022 20:54 CEST | Update | - |
| article html file updated | 14 February 2020 21:24 CET | Update | - |
| article html file updated | 7 February 2020 04:43 CET | Update | - |
| article html file updated | 24 December 2019 13:02 CET | Original file | - |
| article pdf uploaded. | 24 December 2019 13:01 CET | Version of Record | https://www.mdpi.com/2304-8158/9/1/20/pdf |
| article xml uploaded. | 24 December 2019 13:01 CET | Update | https://www.mdpi.com/2304-8158/9/1/20/xml |
| article xml file uploaded | 24 December 2019 13:01 CET | Original file | - |
