| article html file updated | 31 August 2025 10:26 CEST | Update | https://www.mdpi.com/2223-7747/9/2/174 |
| article html file updated | 20 July 2022 18:57 CEST | Update | N/A |
| article html file updated | 6 March 2020 08:38 CET | Update | N/A |
| article html file updated | 15 February 2020 07:00 CET | Update | N/A |
| article html file updated | 7 February 2020 15:57 CET | Update | N/A |
| article xml uploaded. | 7 February 2020 02:37 CET | Update | https://www.mdpi.com/2223-7747/9/2/174/xml |
| article xml uploaded. | 7 February 2020 02:37 CET | Update | N/A |
| article xml uploaded. | 7 February 2020 02:37 CET | Update | N/A |
| article xml uploaded. | 7 February 2020 02:37 CET | Update | N/A |
| article pdf uploaded. | 7 February 2020 02:37 CET | Updated version of record | https://www.mdpi.com/2223-7747/9/2/174/pdf |
| article html file updated | 1 February 2020 12:10 CET | Original file | N/A |
| article pdf uploaded. | 1 February 2020 12:09 CET | Version of Record | https://www.mdpi.com/2223-7747/9/2/174/pdf-vor |
| article xml uploaded. | 1 February 2020 12:09 CET | Update | N/A |
| article xml file uploaded | 1 February 2020 12:09 CET | Original file | N/A |
