| article html file updated | 30 August 2025 20:47 CEST | Update | https://www.mdpi.com/1999-4915/11/6/521 |
| article html file updated | 21 August 2025 21:16 CEST | Update | - |
| article html file updated | 20 July 2022 16:00 CEST | Update | - |
| article html file updated | 12 February 2020 17:57 CET | Update | - |
| article html file updated | 21 October 2019 10:17 CEST | Update | - |
| article html file updated | 5 July 2019 14:41 CEST | Update | - |
| article html file updated | 5 July 2019 12:31 CEST | Update | - |
| article html file updated | 11 June 2019 07:55 CEST | Original file | - |
| article pdf uploaded. | 11 June 2019 07:53 CEST | Updated version of record | https://www.mdpi.com/1999-4915/11/6/521/pdf |
| article xml uploaded. | 11 June 2019 07:53 CEST | Update | https://www.mdpi.com/1999-4915/11/6/521/xml |
| article xml file uploaded | 11 June 2019 07:53 CEST | Update | - |
| article pdf uploaded. | 5 June 2019 17:15 CEST | Version of Record | https://www.mdpi.com/1999-4915/11/6/521/pdf-vor |
| article xml file uploaded | 5 June 2019 17:15 CEST | Original file | - |