| article html file updated | 30 August 2025 02:12 CEST | Update | https://www.mdpi.com/2413-8851/2/1/4 |
| article html file updated | 16 July 2022 08:25 CEST | Update | - |
| article html file updated | 9 February 2020 02:22 CET | Update | - |
| article html file updated | 29 September 2019 18:17 CEST | Update | - |
| article html file updated | 2 May 2019 03:41 CEST | Update | - |
| article html file updated | 18 April 2019 01:49 CEST | Update | - |
| article html file updated | 28 March 2019 13:56 CET | Update | - |
| article html file updated | 8 January 2018 16:58 CET | Original file | - |
| article xml uploaded. | 8 January 2018 16:56 CET | Update | https://www.mdpi.com/2413-8851/2/1/4/xml |
| article pdf uploaded. | 8 January 2018 16:56 CET | Version of Record | https://www.mdpi.com/2413-8851/2/1/4/pdf |
