| article html file updated | 9 February 2020 11:23 CET | Update | https://www.mdpi.com/1424-8220/18/4/990 |
| article html file updated | 2 October 2019 00:08 CEST | Update | N/A |
| article html file updated | 1 May 2019 08:27 CEST | Update | N/A |
| article html file updated | 17 April 2019 08:22 CEST | Update | N/A |
| article html file updated | 29 March 2019 10:06 CET | Update | N/A |
| article html file updated | 7 May 2018 04:08 CEST | Update | N/A |
| article html file updated | 27 March 2018 08:18 CEST | Original file | N/A |
| article xml uploaded. | 27 March 2018 08:17 CEST | Original file | https://www.mdpi.com/1424-8220/18/4/990/xml |
| article pdf uploaded. | 27 March 2018 08:17 CEST | Version of Record | https://www.mdpi.com/1424-8220/18/4/990/pdf |
