| article html file updated | 9 February 2020 11:11 CET | Update | https://www.mdpi.com/1424-8220/18/4/970 |
| article html file updated | 1 October 2019 22:59 CEST | Update | - |
| article html file updated | 1 May 2019 08:53 CEST | Update | - |
| article html file updated | 17 April 2019 08:48 CEST | Update | - |
| article html file updated | 29 March 2019 09:38 CET | Update | - |
| article html file updated | 7 May 2018 04:02 CEST | Update | - |
| article html file updated | 25 March 2018 08:51 CEST | Original file | - |
| article xml uploaded. | 25 March 2018 08:50 CEST | Update | https://www.mdpi.com/1424-8220/18/4/970/xml |
| article pdf uploaded. | 25 March 2018 08:50 CEST | Version of Record | https://www.mdpi.com/1424-8220/18/4/970/pdf |
