| article html file updated | 31 August 2025 05:38 CEST | Update | https://www.mdpi.com/2227-9032/7/4/157 |
| article html file updated | 19 July 2022 22:37 CEST | Update | - |
| article html file updated | 14 February 2020 15:29 CET | Update | - |
| article html file updated | 30 December 2019 09:58 CET | Update | - |
| article html file updated | 19 December 2019 04:32 CET | Original file | - |
| article pdf uploaded. | 19 December 2019 04:30 CET | Updated version of record | https://www.mdpi.com/2227-9032/7/4/157/pdf |
| article xml uploaded. | 19 December 2019 04:30 CET | Update | https://www.mdpi.com/2227-9032/7/4/157/xml |
| article xml file uploaded | 19 December 2019 04:30 CET | Update | - |
| article pdf uploaded. | 3 December 2019 14:04 CET | Version of Record | https://www.mdpi.com/2227-9032/7/4/157/pdf-vor |
| article xml file uploaded | 3 December 2019 14:04 CET | Original file | - |
