| article html file updated | 30 August 2025 03:28 CEST | Update | https://www.mdpi.com/1999-4907/9/4/204 |
| article html file updated | 21 August 2025 19:57 CEST | Update | - |
| article html file updated | 16 July 2022 10:42 CEST | Update | - |
| article html file updated | 9 February 2020 13:42 CET | Update | - |
| article html file updated | 2 October 2019 14:14 CEST | Update | - |
| article html file updated | 1 May 2019 03:43 CEST | Update | - |
| article html file updated | 17 April 2019 04:05 CEST | Update | - |
| article html file updated | 29 March 2019 15:24 CET | Update | - |
| article html file updated | 1 May 2018 11:36 CEST | Update | - |
| article html file updated | 20 April 2018 04:49 CEST | Update | - |
| article xml uploaded. | 20 April 2018 04:48 CEST | Update | https://www.mdpi.com/1999-4907/9/4/204/xml |
| article pdf uploaded. | 20 April 2018 04:48 CEST | Updated version of record | https://www.mdpi.com/1999-4907/9/4/204/pdf |
| article html file updated | 13 April 2018 17:21 CEST | Original file | - |
| article pdf uploaded. | 13 April 2018 17:19 CEST | Version of Record | https://www.mdpi.com/1999-4907/9/4/204/pdf-vor |