| article html file updated | 31 August 2025 07:54 CEST | Update | https://www.mdpi.com/2223-7747/9/1/51 |
| article html file updated | 19 July 2022 20:25 CEST | Update | N/A |
| article html file updated | 14 February 2020 23:04 CET | Update | N/A |
| article html file updated | 5 February 2020 12:55 CET | Update | N/A |
| article html file updated | 22 January 2020 04:44 CET | Update | N/A |
| article pdf uploaded. | 22 January 2020 04:43 CET | Updated version of record | https://www.mdpi.com/2223-7747/9/1/51/pdf |
| article xml uploaded. | 22 January 2020 04:43 CET | Update | https://www.mdpi.com/2223-7747/9/1/51/xml |
| article xml file uploaded | 22 January 2020 04:43 CET | Update | N/A |
| article html file updated | 21 January 2020 04:35 CET | Original file | N/A |
| article pdf uploaded. | 21 January 2020 04:33 CET | Updated version of record | https://www.mdpi.com/2223-7747/9/1/51/pdf-vor |
| article xml uploaded. | 21 January 2020 04:33 CET | Update | N/A |
| article xml file uploaded | 21 January 2020 04:33 CET | Update | N/A |
| article supplementary file uploaded. | 31 December 2019 12:45 CET | - | https://www.mdpi.com/2223-7747/9/1/51#supplementary |
| article pdf uploaded. | 31 December 2019 12:45 CET | Version of Record | https://www.mdpi.com/2223-7747/9/1/51/pdf-vor |
| article xml file uploaded | 31 December 2019 12:45 CET | Original file | N/A |
