| article html file updated | 14 September 2021 08:52 CEST | Update | https://www.mdpi.com/2075-4701/8/4/210 |
| article html file updated | 9 February 2020 11:12 CET | Update | - |
| article html file updated | 1 October 2019 23:05 CEST | Update | - |
| article html file updated | 1 May 2019 08:51 CEST | Update | - |
| article html file updated | 17 April 2019 08:46 CEST | Update | - |
| article html file updated | 29 March 2019 09:40 CET | Update | - |
| article html file updated | 1 May 2018 07:14 CEST | Update | - |
| article html file updated | 1 May 2018 07:13 CEST | Update | - |
| article html file updated | 25 March 2018 10:40 CEST | Original file | - |
| article xml uploaded. | 25 March 2018 10:38 CEST | Update | https://www.mdpi.com/2075-4701/8/4/210/xml |
| article pdf uploaded. | 25 March 2018 10:31 CEST | Version of Record | https://www.mdpi.com/2075-4701/8/4/210/pdf |
