| article html file updated | 9 February 2020 12:57 CET | Update | https://www.mdpi.com/2077-1444/9/4/117 |
| article html file updated | 2 October 2019 09:35 CEST | Update | - |
| article html file updated | 1 May 2019 05:12 CEST | Update | - |
| article html file updated | 17 April 2019 05:24 CEST | Update | - |
| article html file updated | 29 March 2019 13:42 CET | Update | - |
| article html file updated | 1 May 2018 05:19 CEST | Update | - |
| article html file updated | 8 April 2018 11:51 CEST | Original file | - |
| article xml uploaded. | 8 April 2018 11:49 CEST | Original file | https://www.mdpi.com/2077-1444/9/4/117/xml |
| article pdf uploaded. | 8 April 2018 11:49 CEST | Version of Record | https://www.mdpi.com/2077-1444/9/4/117/pdf |
