| article html file updated | 30 August 2025 00:16 CEST | Update | https://www.mdpi.com/2079-4991/7/1/21 |
| article html file updated | 16 July 2022 04:37 CEST | Update | - |
| article html file updated | 7 February 2020 22:01 CET | Update | - |
| article html file updated | 23 September 2019 00:24 CEST | Update | - |
| article html file updated | 4 May 2019 14:00 CEST | Update | - |
| article html file updated | 7 February 2017 13:01 CET | Update | - |
| article html file updated | 22 January 2017 13:02 CET | Original file | - |
| article xml uploaded. | 22 January 2017 13:00 CET | Original file | https://www.mdpi.com/2079-4991/7/1/21/xml |
| article pdf uploaded. | 22 January 2017 13:00 CET | Version of Record | https://www.mdpi.com/2079-4991/7/1/21/pdf |
