| article html file updated | 9 February 2020 11:33 CET | Update | https://www.mdpi.com/1424-8220/18/4/1000 |
| article html file updated | 2 October 2019 01:10 CEST | Update | - |
| article html file updated | 1 May 2019 08:04 CEST | Update | - |
| article html file updated | 17 April 2019 08:01 CEST | Update | - |
| article html file updated | 29 March 2019 10:30 CET | Update | - |
| article html file updated | 7 May 2018 04:11 CEST | Update | - |
| article html file updated | 28 March 2018 10:06 CEST | Original file | - |
| article xml uploaded. | 28 March 2018 10:04 CEST | Update | https://www.mdpi.com/1424-8220/18/4/1000/xml |
| article pdf uploaded. | 28 March 2018 10:01 CEST | Version of Record | https://www.mdpi.com/1424-8220/18/4/1000/pdf |
