| article html file updated | 1 September 2025 13:07 CEST | Update | https://www.mdpi.com/2199-8531/6/4/139 |
| article html file updated | 23 July 2022 00:31 CEST | Update | - |
| article html file updated | 16 December 2020 11:09 CET | Update | - |
| article pdf uploaded. | 16 December 2020 10:05 CET | Updated version of record | https://www.mdpi.com/2199-8531/6/4/139/pdf |
| article xml uploaded. | 16 December 2020 10:05 CET | Update | https://www.mdpi.com/2199-8531/6/4/139/xml |
| article xml file uploaded | 16 December 2020 10:05 CET | Update | - |
| article html file updated | 16 December 2020 09:35 CET | Update | - |
| article pdf uploaded. | 16 December 2020 09:33 CET | Updated version of record | https://www.mdpi.com/2199-8531/6/4/139/pdf-vor |
| article xml uploaded. | 16 December 2020 09:33 CET | Update | - |
| article xml file uploaded | 16 December 2020 09:33 CET | Update | - |
| article html file updated | 11 November 2020 02:12 CET | Update | - |
| article pdf uploaded. | 11 November 2020 02:11 CET | Updated version of record | https://www.mdpi.com/2199-8531/6/4/139/pdf-vor |
| article xml uploaded. | 11 November 2020 02:11 CET | Update | - |
| article xml file uploaded | 11 November 2020 02:11 CET | Update | - |
| article html file updated | 10 November 2020 14:08 CET | Original file | - |
| article pdf uploaded. | 10 November 2020 14:06 CET | Version of Record | https://www.mdpi.com/2199-8531/6/4/139/pdf-vor |
| article xml uploaded. | 10 November 2020 14:06 CET | Update | - |
| article xml file uploaded | 10 November 2020 14:06 CET | Original file | - |
