| article html file updated | 9 February 2020 10:55 CET | Update | https://www.mdpi.com/2075-4701/8/4/204 |
| article html file updated | 1 October 2019 21:27 CEST | Update | - |
| article html file updated | 1 May 2019 09:26 CEST | Update | - |
| article html file updated | 17 April 2019 09:21 CEST | Update | - |
| article html file updated | 29 March 2019 08:59 CET | Update | - |
| article html file updated | 1 May 2018 07:09 CEST | Update | - |
| article html file updated | 1 May 2018 07:09 CEST | Update | - |
| article html file updated | 23 March 2018 04:54 CET | Original file | - |
| article xml uploaded. | 23 March 2018 04:53 CET | Update | https://www.mdpi.com/2075-4701/8/4/204/xml |
| article pdf uploaded. | 23 March 2018 04:53 CET | Version of Record | https://www.mdpi.com/2075-4701/8/4/204/pdf |