| article html file updated | 18 August 2026 04:43 CEST | Update | https://www.mdpi.com/2199-8531/6/4/109 |
| article html file updated | 1 September 2025 10:27 CEST | Update | N/A |
| article html file updated | 22 August 2025 00:14 CEST | Update | N/A |
| article html file updated | 22 July 2022 10:09 CEST | Update | N/A |
| article html file updated | 28 October 2020 10:09 CET | Original file | N/A |
| article pdf uploaded. | 28 October 2020 10:06 CET | Updated version of record | https://www.mdpi.com/2199-8531/6/4/109/pdf |
| article xml uploaded. | 28 October 2020 10:06 CET | Update | https://www.mdpi.com/2199-8531/6/4/109/xml |
| article xml file uploaded | 28 October 2020 10:06 CET | Original file | N/A |
| article pdf uploaded. | 10 October 2020 10:56 CEST | Version of Record | https://www.mdpi.com/2199-8531/6/4/109/pdf-vor |
