| article html file updated | 29 August 2025 23:45 CEST | Update | https://www.mdpi.com/2076-2607/4/4/39 |
| article html file updated | 16 July 2022 03:35 CEST | Update | - |
| article html file updated | 7 February 2020 16:26 CET | Update | - |
| article html file updated | 22 September 2019 03:01 CEST | Update | - |
| article html file updated | 5 May 2019 01:30 CEST | Update | - |
| article html file updated | 27 August 2018 08:52 CEST | Update | - |
| article html file updated | 28 June 2018 11:36 CEST | Update | - |
| article html file updated | 28 December 2016 11:37 CET | Update | - |
| article html file updated | 17 October 2016 03:58 CEST | Original file | - |
| article xml uploaded. | 17 October 2016 03:57 CEST | Update | https://www.mdpi.com/2076-2607/4/4/39/xml |
| article xml uploaded. | 17 October 2016 03:57 CEST | Original file | - |
| article pdf uploaded. | 17 October 2016 03:57 CEST | Updated version of record | https://www.mdpi.com/2076-2607/4/4/39/pdf |
| article pdf uploaded. | 16 October 2016 07:37 CEST | Version of Record | https://www.mdpi.com/2076-2607/4/4/39/pdf-vor |