| article html file updated | 31 August 2025 02:56 CEST | Update | https://www.mdpi.com/2227-9032/7/4/117 |
| article html file updated | 20 July 2022 01:36 CEST | Update | - |
| article html file updated | 14 February 2020 01:00 CET | Update | - |
| article html file updated | 30 December 2019 09:50 CET | Update | - |
| article html file updated | 15 October 2019 12:21 CEST | Original file | - |
| article pdf uploaded. | 15 October 2019 12:20 CEST | Version of Record | https://www.mdpi.com/2227-9032/7/4/117/pdf |
| article xml uploaded. | 15 October 2019 12:20 CEST | Update | https://www.mdpi.com/2227-9032/7/4/117/xml |
| article xml file uploaded | 15 October 2019 12:20 CEST | Original file | - |
