| article html file updated | 31 August 2025 06:46 CEST | Update | https://www.mdpi.com/2218-2004/7/4/108 |
| article html file updated | 19 July 2022 21:29 CEST | Update | N/A |
| article html file updated | 14 February 2020 19:24 CET | Update | N/A |
| article html file updated | 31 December 2019 19:05 CET | Update | N/A |
| article html file updated | 17 December 2019 12:01 CET | Original file | N/A |
| article pdf uploaded. | 17 December 2019 11:59 CET | Version of Record | https://www.mdpi.com/2218-2004/7/4/108/pdf |
| article xml uploaded. | 17 December 2019 11:59 CET | Update | https://www.mdpi.com/2218-2004/7/4/108/xml |
| article xml file uploaded | 17 December 2019 11:59 CET | Original file | N/A |
