| article html file updated | 9 February 2020 12:37 CET | Update | https://www.mdpi.com/2075-4701/8/4/239 |
| article html file updated | 2 October 2019 07:22 CEST | Update | - |
| article html file updated | 1 May 2019 05:55 CEST | Update | - |
| article html file updated | 17 April 2019 06:02 CEST | Update | - |
| article html file updated | 29 March 2019 12:55 CET | Update | - |
| article html file updated | 1 May 2018 07:40 CEST | Update | - |
| article html file updated | 1 May 2018 07:39 CEST | Update | - |
| article html file updated | 4 April 2018 18:45 CEST | Original file | - |
| article xml uploaded. | 4 April 2018 18:44 CEST | Update | https://www.mdpi.com/2075-4701/8/4/239/xml |
| article pdf uploaded. | 4 April 2018 18:43 CEST | Version of Record | https://www.mdpi.com/2075-4701/8/4/239/pdf |
