| article html file updated | 11 February 2020 17:40 CET | Update | https://www.mdpi.com/1424-8220/19/4/903 |
| article html file updated | 15 October 2019 09:47 CEST | Update | - |
| article html file updated | 26 April 2019 13:19 CEST | Update | - |
| article html file updated | 12 April 2019 08:51 CEST | Update | - |
| article html file updated | 4 April 2019 00:53 CEST | Update | - |
| article html file updated | 5 March 2019 05:30 CET | Update | - |
| article html file updated | 1 March 2019 08:33 CET | Update | - |
| article html file updated | 21 February 2019 10:30 CET | Original file | - |
| article pdf uploaded. | 21 February 2019 10:28 CET | Version of Record | https://www.mdpi.com/1424-8220/19/4/903/pdf |
| article xml uploaded. | 21 February 2019 10:28 CET | Update | https://www.mdpi.com/1424-8220/19/4/903/xml |
| article xml file uploaded | 21 February 2019 10:28 CET | Original file | - |
