| article html file updated | 31 August 2025 15:25 CEST | Update | https://www.mdpi.com/2076-3921/9/4/272 |
| article html file updated | 20 July 2022 23:55 CEST | Update | N/A |
| article html file updated | 31 March 2020 15:26 CEST | Original file | N/A |
| article pdf uploaded. | 31 March 2020 15:24 CEST | Updated version of record | https://www.mdpi.com/2076-3921/9/4/272/pdf |
| article xml uploaded. | 31 March 2020 15:24 CEST | Update | https://www.mdpi.com/2076-3921/9/4/272/xml |
| article xml file uploaded | 31 March 2020 15:24 CEST | Update | N/A |
| article pdf uploaded. | 25 March 2020 12:14 CET | Version of Record | https://www.mdpi.com/2076-3921/9/4/272/pdf-vor |
| article xml file uploaded | 25 March 2020 12:14 CET | Original file | N/A |
