| article html file updated | 31 August 2025 15:27 CEST | Update | https://www.mdpi.com/2227-9032/8/2/69 |
| article html file updated | 20 July 2022 23:57 CEST | Update | N/A |
| article html file updated | 30 March 2020 11:37 CEST | Original file | N/A |
| article pdf uploaded. | 30 March 2020 11:36 CEST | Updated version of record | https://www.mdpi.com/2227-9032/8/2/69/pdf |
| article xml uploaded. | 30 March 2020 11:36 CEST | Update | https://www.mdpi.com/2227-9032/8/2/69/xml |
| article xml file uploaded | 30 March 2020 11:36 CEST | Update | N/A |
| article pdf uploaded. | 25 March 2020 14:23 CET | Version of Record | https://www.mdpi.com/2227-9032/8/2/69/pdf-vor |
| article xml file uploaded | 25 March 2020 14:23 CET | Original file | N/A |
