| article html file updated | 30 August 2025 00:27 CEST | Update | https://www.mdpi.com/2078-1547/8/1/6 |
| article html file updated | 21 August 2025 19:16 CEST | Update | N/A |
| article html file updated | 16 July 2022 04:57 CEST | Update | N/A |
| article html file updated | 7 February 2020 23:51 CET | Update | N/A |
| article html file updated | 23 September 2019 10:31 CEST | Update | N/A |
| article html file updated | 4 May 2019 10:21 CEST | Update | N/A |
| article html file updated | 21 February 2017 12:39 CET | Original file | N/A |
| article xml uploaded. | 21 February 2017 12:37 CET | Update | https://www.mdpi.com/2078-1547/8/1/6/xml |
| article xml uploaded. | 21 February 2017 12:37 CET | Original file | N/A |
| article pdf uploaded. | 21 February 2017 12:37 CET | Updated version of record | https://www.mdpi.com/2078-1547/8/1/6/pdf |
| article pdf uploaded. | 20 February 2017 16:16 CET | Version of Record | https://www.mdpi.com/2078-1547/8/1/6/pdf-vor |
